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Finding the Fourth Proportional to 8,887.94, 12,260.85 and 5,531.30

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Solution

The fourth proportional to 8,887.94, 12,260.85 and 5,531.30 is: 7,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.94 : 12,260.85 = 5,531.30 : x
  2. Step 2: Convert to fraction form
    8,887.94/12,260.85 = 5,531.30/x
  3. Step 3: Cross multiply
    8,887.94x = 12,260.85 × 5,531.30
  4. Step 4: Simplify right side
    8,887.94x = 67,818,439.61
  5. Step 5: Solve for x
    x = 67,818,439.61/8,887.94
  6. Step 6: Final answer
    x = 7,630.39

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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.