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Finding the Fourth Proportional to 2,792.58, 4,188.87 and 1,127.49

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Solution

The fourth proportional to 2,792.58, 4,188.87 and 1,127.49 is: 1,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.58 : 4,188.87 = 1,127.49 : x
  2. Step 2: Convert to fraction form
    2,792.58/4,188.87 = 1,127.49/x
  3. Step 3: Cross multiply
    2,792.58x = 4,188.87 × 1,127.49
  4. Step 4: Simplify right side
    2,792.58x = 4,722,909.04
  5. Step 5: Solve for x
    x = 4,722,909.04/2,792.58
  6. Step 6: Final answer
    x = 1,691.24

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1.5x scale

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.