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Finding the Fourth Proportional to 2,397.80, 3,308.11 and 1,402.52

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Solution

The fourth proportional to 2,397.80, 3,308.11 and 1,402.52 is: 1,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,397.80 : 3,308.11 = 1,402.52 : x
  2. Step 2: Convert to fraction form
    2,397.80/3,308.11 = 1,402.52/x
  3. Step 3: Cross multiply
    2,397.80x = 3,308.11 × 1,402.52
  4. Step 4: Simplify right side
    2,397.80x = 4,639,670.39
  5. Step 5: Solve for x
    x = 4,639,670.39/2,397.80
  6. Step 6: Final answer
    x = 1,934.97

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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.