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Finding the Fourth Proportional to 6,442.88, 8,891.17 and 3,648.38

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Solution

The fourth proportional to 6,442.88, 8,891.17 and 3,648.38 is: 5,034.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.88 : 8,891.17 = 3,648.38 : x
  2. Step 2: Convert to fraction form
    6,442.88/8,891.17 = 3,648.38/x
  3. Step 3: Cross multiply
    6,442.88x = 8,891.17 × 3,648.38
  4. Step 4: Simplify right side
    6,442.88x = 32,438,313.23
  5. Step 5: Solve for x
    x = 32,438,313.23/6,442.88
  6. Step 6: Final answer
    x = 5,034.76

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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.