Home / 2,265.31-3,397.76-621.80

Finding the Fourth Proportional to 2,265.31, 3,397.76 and 621.80

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Solution

The fourth proportional to 2,265.31, 3,397.76 and 621.80 is: 932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.31 : 3,397.76 = 621.80 : x
  2. Step 2: Convert to fraction form
    2,265.31/3,397.76 = 621.80/x
  3. Step 3: Cross multiply
    2,265.31x = 3,397.76 × 621.80
  4. Step 4: Simplify right side
    2,265.31x = 2,112,727.17
  5. Step 5: Solve for x
    x = 2,112,727.17/2,265.31
  6. Step 6: Final answer
    x = 932.64

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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.