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Finding the Fourth Proportional to 8,762.97, 13,113 and 8,176.43

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Solution

The fourth proportional to 8,762.97, 13,113 and 8,176.43 is: 12,235.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.97 : 13,113 = 8,176.43 : x
  2. Step 2: Convert to fraction form
    8,762.97/13,113 = 8,176.43/x
  3. Step 3: Cross multiply
    8,762.97x = 13,113 × 8,176.43
  4. Step 4: Simplify right side
    8,762.97x = 107,217,461.03
  5. Step 5: Solve for x
    x = 107,217,461.03/8,762.97
  6. Step 6: Final answer
    x = 12,235.29

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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.