Home / 3,129.41-4,317.93-1,802.76

Finding the Fourth Proportional to 3,129.41, 4,317.93 and 1,802.76

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Solution

The fourth proportional to 3,129.41, 4,317.93 and 1,802.76 is: 2,487.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.41 : 4,317.93 = 1,802.76 : x
  2. Step 2: Convert to fraction form
    3,129.41/4,317.93 = 1,802.76/x
  3. Step 3: Cross multiply
    3,129.41x = 4,317.93 × 1,802.76
  4. Step 4: Simplify right side
    3,129.41x = 7,784,191.49
  5. Step 5: Solve for x
    x = 7,784,191.49/3,129.41
  6. Step 6: Final answer
    x = 2,487.43

Related Problems

Find fourth proportional to 1,564.70, 2,158.97 and 901.38
Half scale
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Double scale
Find fourth proportional to 3,130.41, 4,319.31 and 1,803.76
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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.