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Finding the Fourth Proportional to 11,287, 15,575.64 and 6,251.12

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Solution

The fourth proportional to 11,287, 15,575.64 and 6,251.12 is: 8,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287 : 15,575.64 = 6,251.12 : x
  2. Step 2: Convert to fraction form
    11,287/15,575.64 = 6,251.12/x
  3. Step 3: Cross multiply
    11,287x = 15,575.64 × 6,251.12
  4. Step 4: Simplify right side
    11,287x = 97,365,194.72
  5. Step 5: Solve for x
    x = 97,365,194.72/11,287
  6. Step 6: Final answer
    x = 8,626.31

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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.