Home / 3,515.68-5,272.56-1,781.92

Finding the Fourth Proportional to 3,515.68, 5,272.56 and 1,781.92

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Solution

The fourth proportional to 3,515.68, 5,272.56 and 1,781.92 is: 2,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.68 : 5,272.56 = 1,781.92 : x
  2. Step 2: Convert to fraction form
    3,515.68/5,272.56 = 1,781.92/x
  3. Step 3: Cross multiply
    3,515.68x = 5,272.56 × 1,781.92
  4. Step 4: Simplify right side
    3,515.68x = 9,395,280.12
  5. Step 5: Solve for x
    x = 9,395,280.12/3,515.68
  6. Step 6: Final answer
    x = 2,672.39

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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.