Home / 2,265.35-3,397.90-621.78

Finding the Fourth Proportional to 2,265.35, 3,397.90 and 621.78

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Solution

The fourth proportional to 2,265.35, 3,397.90 and 621.78 is: 932.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.35 : 3,397.90 = 621.78 : x
  2. Step 2: Convert to fraction form
    2,265.35/3,397.90 = 621.78/x
  3. Step 3: Cross multiply
    2,265.35x = 3,397.90 × 621.78
  4. Step 4: Simplify right side
    2,265.35x = 2,112,743.15
  5. Step 5: Solve for x
    x = 2,112,743.15/2,265.35
  6. Step 6: Final answer
    x = 932.63

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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.