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Finding the Fourth Proportional to 8,771, 13,153.30 and 2,925.88

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Solution

The fourth proportional to 8,771, 13,153.30 and 2,925.88 is: 4,387.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771 : 13,153.30 = 2,925.88 : x
  2. Step 2: Convert to fraction form
    8,771/13,153.30 = 2,925.88/x
  3. Step 3: Cross multiply
    8,771x = 13,153.30 × 2,925.88
  4. Step 4: Simplify right side
    8,771x = 38,484,977.40
  5. Step 5: Solve for x
    x = 38,484,977.40/8,771
  6. Step 6: Final answer
    x = 4,387.75

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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.