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Finding the Fourth Proportional to 8,528.76, 12,798 and 8,462.88

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Solution

The fourth proportional to 8,528.76, 12,798 and 8,462.88 is: 12,699.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.76 : 12,798 = 8,462.88 : x
  2. Step 2: Convert to fraction form
    8,528.76/12,798 = 8,462.88/x
  3. Step 3: Cross multiply
    8,528.76x = 12,798 × 8,462.88
  4. Step 4: Simplify right side
    8,528.76x = 108,307,938.24
  5. Step 5: Solve for x
    x = 108,307,938.24/8,528.76
  6. Step 6: Final answer
    x = 12,699.14

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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.