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Finding the Fourth Proportional to 8,528.58, 12,793.48 and 2,981.30

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Solution

The fourth proportional to 8,528.58, 12,793.48 and 2,981.30 is: 4,472.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.58 : 12,793.48 = 2,981.30 : x
  2. Step 2: Convert to fraction form
    8,528.58/12,793.48 = 2,981.30/x
  3. Step 3: Cross multiply
    8,528.58x = 12,793.48 × 2,981.30
  4. Step 4: Simplify right side
    8,528.58x = 38,141,201.92
  5. Step 5: Solve for x
    x = 38,141,201.92/8,528.58
  6. Step 6: Final answer
    x = 4,472.16

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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.