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Finding the Fourth Proportional to 8,925.58, 12,318.75 and 8,531.86

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Solution

The fourth proportional to 8,925.58, 12,318.75 and 8,531.86 is: 11,775.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,925.58 : 12,318.75 = 8,531.86 : x
  2. Step 2: Convert to fraction form
    8,925.58/12,318.75 = 8,531.86/x
  3. Step 3: Cross multiply
    8,925.58x = 12,318.75 × 8,531.86
  4. Step 4: Simplify right side
    8,925.58x = 105,101,850.38
  5. Step 5: Solve for x
    x = 105,101,850.38/8,925.58
  6. Step 6: Final answer
    x = 11,775.35

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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.