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Finding the Fourth Proportional to 3,591.92, 5,386.97 and 1,127.29

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Solution

The fourth proportional to 3,591.92, 5,386.97 and 1,127.29 is: 1,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.92 : 5,386.97 = 1,127.29 : x
  2. Step 2: Convert to fraction form
    3,591.92/5,386.97 = 1,127.29/x
  3. Step 3: Cross multiply
    3,591.92x = 5,386.97 × 1,127.29
  4. Step 4: Simplify right side
    3,591.92x = 6,072,677.41
  5. Step 5: Solve for x
    x = 6,072,677.41/3,591.92
  6. Step 6: Final answer
    x = 1,690.65

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Half scale
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Double scale
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Similar ratio
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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.