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Finding the Fourth Proportional to 8,488.60, 11,715.72 and 4,951.80

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Solution

The fourth proportional to 8,488.60, 11,715.72 and 4,951.80 is: 6,834.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.60 : 11,715.72 = 4,951.80 : x
  2. Step 2: Convert to fraction form
    8,488.60/11,715.72 = 4,951.80/x
  3. Step 3: Cross multiply
    8,488.60x = 11,715.72 × 4,951.80
  4. Step 4: Simplify right side
    8,488.60x = 58,013,902.30
  5. Step 5: Solve for x
    x = 58,013,902.30/8,488.60
  6. Step 6: Final answer
    x = 6,834.33

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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.