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Finding the Fourth Proportional to 8,665.71, 12,925.76 and 7,867.53

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Solution

The fourth proportional to 8,665.71, 12,925.76 and 7,867.53 is: 11,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.71 : 12,925.76 = 7,867.53 : x
  2. Step 2: Convert to fraction form
    8,665.71/12,925.76 = 7,867.53/x
  3. Step 3: Cross multiply
    8,665.71x = 12,925.76 × 7,867.53
  4. Step 4: Simplify right side
    8,665.71x = 101,693,765.24
  5. Step 5: Solve for x
    x = 101,693,765.24/8,665.71
  6. Step 6: Final answer
    x = 11,735.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.