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Finding the Fourth Proportional to 8,877.60, 13,232.16 and 8,812.80

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Solution

The fourth proportional to 8,877.60, 13,232.16 and 8,812.80 is: 13,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.60 : 13,232.16 = 8,812.80 : x
  2. Step 2: Convert to fraction form
    8,877.60/13,232.16 = 8,812.80/x
  3. Step 3: Cross multiply
    8,877.60x = 13,232.16 × 8,812.80
  4. Step 4: Simplify right side
    8,877.60x = 116,612,379.65
  5. Step 5: Solve for x
    x = 116,612,379.65/8,877.60
  6. Step 6: Final answer
    x = 13,135.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.