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Finding the Fourth Proportional to 8,911.71, 13,391.80 and 4,754.66

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Solution

The fourth proportional to 8,911.71, 13,391.80 and 4,754.66 is: 7,144.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.71 : 13,391.80 = 4,754.66 : x
  2. Step 2: Convert to fraction form
    8,911.71/13,391.80 = 4,754.66/x
  3. Step 3: Cross multiply
    8,911.71x = 13,391.80 × 4,754.66
  4. Step 4: Simplify right side
    8,911.71x = 63,673,376.94
  5. Step 5: Solve for x
    x = 63,673,376.94/8,911.71
  6. Step 6: Final answer
    x = 7,144.91

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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.