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Finding the Fourth Proportional to 1,759.52, 2,640.04 and 1,102.90

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Solution

The fourth proportional to 1,759.52, 2,640.04 and 1,102.90 is: 1,654.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.52 : 2,640.04 = 1,102.90 : x
  2. Step 2: Convert to fraction form
    1,759.52/2,640.04 = 1,102.90/x
  3. Step 3: Cross multiply
    1,759.52x = 2,640.04 × 1,102.90
  4. Step 4: Simplify right side
    1,759.52x = 2,911,701.91
  5. Step 5: Solve for x
    x = 2,911,701.91/1,759.52
  6. Step 6: Final answer
    x = 1,654.83

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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.