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Finding the Fourth Proportional to 8,887.21, 12,255.16 and 7,632.42

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Solution

The fourth proportional to 8,887.21, 12,255.16 and 7,632.42 is: 10,524.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.21 : 12,255.16 = 7,632.42 : x
  2. Step 2: Convert to fraction form
    8,887.21/12,255.16 = 7,632.42/x
  3. Step 3: Cross multiply
    8,887.21x = 12,255.16 × 7,632.42
  4. Step 4: Simplify right side
    8,887.21x = 93,536,490.13
  5. Step 5: Solve for x
    x = 93,536,490.13/8,887.21
  6. Step 6: Final answer
    x = 10,524.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.