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Finding the Fourth Proportional to 2,420.73, 3,340.17 and 1,425.47

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Solution

The fourth proportional to 2,420.73, 3,340.17 and 1,425.47 is: 1,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.73 : 3,340.17 = 1,425.47 : x
  2. Step 2: Convert to fraction form
    2,420.73/3,340.17 = 1,425.47/x
  3. Step 3: Cross multiply
    2,420.73x = 3,340.17 × 1,425.47
  4. Step 4: Simplify right side
    2,420.73x = 4,761,295.43
  5. Step 5: Solve for x
    x = 4,761,295.43/2,420.73
  6. Step 6: Final answer
    x = 1,966.88

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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.