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Finding the Fourth Proportional to 2,702.97, 3,732.21 and 2,115.18

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Solution

The fourth proportional to 2,702.97, 3,732.21 and 2,115.18 is: 2,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,702.97 : 3,732.21 = 2,115.18 : x
  2. Step 2: Convert to fraction form
    2,702.97/3,732.21 = 2,115.18/x
  3. Step 3: Cross multiply
    2,702.97x = 3,732.21 × 2,115.18
  4. Step 4: Simplify right side
    2,702.97x = 7,894,295.95
  5. Step 5: Solve for x
    x = 7,894,295.95/2,702.97
  6. Step 6: Final answer
    x = 2,920.60

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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.