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Finding the Fourth Proportional to 5,575.57, 7,691.57 and 4,691.05

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Solution

The fourth proportional to 5,575.57, 7,691.57 and 4,691.05 is: 6,471.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,575.57 : 7,691.57 = 4,691.05 : x
  2. Step 2: Convert to fraction form
    5,575.57/7,691.57 = 4,691.05/x
  3. Step 3: Cross multiply
    5,575.57x = 7,691.57 × 4,691.05
  4. Step 4: Simplify right side
    5,575.57x = 36,081,515.99
  5. Step 5: Solve for x
    x = 36,081,515.99/5,575.57
  6. Step 6: Final answer
    x = 6,471.36

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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.