Home / 8,781.81-13,175.14-3,591.33

Finding the Fourth Proportional to 8,781.81, 13,175.14 and 3,591.33

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Solution

The fourth proportional to 8,781.81, 13,175.14 and 3,591.33 is: 5,387.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.81 : 13,175.14 = 3,591.33 : x
  2. Step 2: Convert to fraction form
    8,781.81/13,175.14 = 3,591.33/x
  3. Step 3: Cross multiply
    8,781.81x = 13,175.14 × 3,591.33
  4. Step 4: Simplify right side
    8,781.81x = 47,316,275.54
  5. Step 5: Solve for x
    x = 47,316,275.54/8,781.81
  6. Step 6: Final answer
    x = 5,387.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.