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Finding the Fourth Proportional to 8,857.59, 13,288.22 and 7,406.88

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Solution

The fourth proportional to 8,857.59, 13,288.22 and 7,406.88 is: 11,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.59 : 13,288.22 = 7,406.88 : x
  2. Step 2: Convert to fraction form
    8,857.59/13,288.22 = 7,406.88/x
  3. Step 3: Cross multiply
    8,857.59x = 13,288.22 × 7,406.88
  4. Step 4: Simplify right side
    8,857.59x = 98,424,213.92
  5. Step 5: Solve for x
    x = 98,424,213.92/8,857.59
  6. Step 6: Final answer
    x = 11,111.85

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1.5x scale

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.