Home / 2,816.76-3,887.31-1,697.70

Finding the Fourth Proportional to 2,816.76, 3,887.31 and 1,697.70

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Solution

The fourth proportional to 2,816.76, 3,887.31 and 1,697.70 is: 2,342.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.76 : 3,887.31 = 1,697.70 : x
  2. Step 2: Convert to fraction form
    2,816.76/3,887.31 = 1,697.70/x
  3. Step 3: Cross multiply
    2,816.76x = 3,887.31 × 1,697.70
  4. Step 4: Simplify right side
    2,816.76x = 6,599,486.19
  5. Step 5: Solve for x
    x = 6,599,486.19/2,816.76
  6. Step 6: Final answer
    x = 2,342.94

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Find fourth proportional to 1,408.38, 1,943.66 and 848.85
Half scale
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Double scale
Find fourth proportional to 2,817.76, 3,888.69 and 1,698.70
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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.