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Finding the Fourth Proportional to 8,812.58, 12,177.46 and 6,418.39

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Solution

The fourth proportional to 8,812.58, 12,177.46 and 6,418.39 is: 8,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.58 : 12,177.46 = 6,418.39 : x
  2. Step 2: Convert to fraction form
    8,812.58/12,177.46 = 6,418.39/x
  3. Step 3: Cross multiply
    8,812.58x = 12,177.46 × 6,418.39
  4. Step 4: Simplify right side
    8,812.58x = 78,159,651.80
  5. Step 5: Solve for x
    x = 78,159,651.80/8,812.58
  6. Step 6: Final answer
    x = 8,869.10

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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.