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Finding the Fourth Proportional to 8,877.70, 12,244.16 and 5,518.53

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Solution

The fourth proportional to 8,877.70, 12,244.16 and 5,518.53 is: 7,611.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.70 : 12,244.16 = 5,518.53 : x
  2. Step 2: Convert to fraction form
    8,877.70/12,244.16 = 5,518.53/x
  3. Step 3: Cross multiply
    8,877.70x = 12,244.16 × 5,518.53
  4. Step 4: Simplify right side
    8,877.70x = 67,569,778.08
  5. Step 5: Solve for x
    x = 67,569,778.08/8,877.70
  6. Step 6: Final answer
    x = 7,611.18

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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.