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Finding the Fourth Proportional to 1,951.76, 2,689.80 and 1,600.40

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Solution

The fourth proportional to 1,951.76, 2,689.80 and 1,600.40 is: 2,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.76 : 2,689.80 = 1,600.40 : x
  2. Step 2: Convert to fraction form
    1,951.76/2,689.80 = 1,600.40/x
  3. Step 3: Cross multiply
    1,951.76x = 2,689.80 × 1,600.40
  4. Step 4: Simplify right side
    1,951.76x = 4,304,755.92
  5. Step 5: Solve for x
    x = 4,304,755.92/1,951.76
  6. Step 6: Final answer
    x = 2,205.58

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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.