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Finding the Fourth Proportional to 9,330.88, 12,886.14 and 8,531.14

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Solution

The fourth proportional to 9,330.88, 12,886.14 and 8,531.14 is: 11,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.88 : 12,886.14 = 8,531.14 : x
  2. Step 2: Convert to fraction form
    9,330.88/12,886.14 = 8,531.14/x
  3. Step 3: Cross multiply
    9,330.88x = 12,886.14 × 8,531.14
  4. Step 4: Simplify right side
    9,330.88x = 109,933,464.40
  5. Step 5: Solve for x
    x = 109,933,464.40/9,330.88
  6. Step 6: Final answer
    x = 11,781.68

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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.