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Finding the Fourth Proportional to 8,365.12, 12,551.80 and 5,915.68

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Solution

The fourth proportional to 8,365.12, 12,551.80 and 5,915.68 is: 8,876.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.12 : 12,551.80 = 5,915.68 : x
  2. Step 2: Convert to fraction form
    8,365.12/12,551.80 = 5,915.68/x
  3. Step 3: Cross multiply
    8,365.12x = 12,551.80 × 5,915.68
  4. Step 4: Simplify right side
    8,365.12x = 74,252,432.22
  5. Step 5: Solve for x
    x = 74,252,432.22/8,365.12
  6. Step 6: Final answer
    x = 8,876.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.