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Finding the Fourth Proportional to 3,704.66, 5,112.42 and 2,132.76

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Solution

The fourth proportional to 3,704.66, 5,112.42 and 2,132.76 is: 2,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,704.66 : 5,112.42 = 2,132.76 : x
  2. Step 2: Convert to fraction form
    3,704.66/5,112.42 = 2,132.76/x
  3. Step 3: Cross multiply
    3,704.66x = 5,112.42 × 2,132.76
  4. Step 4: Simplify right side
    3,704.66x = 10,903,564.88
  5. Step 5: Solve for x
    x = 10,903,564.88/3,704.66
  6. Step 6: Final answer
    x = 2,943.20

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Find fourth proportional to 1,852.33, 2,556.21 and 1,066.38
Half scale
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Double scale
Find fourth proportional to 3,705.66, 5,113.80 and 2,133.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.