Home / 8,660.39-11,951.42-5,122.85

Finding the Fourth Proportional to 8,660.39, 11,951.42 and 5,122.85

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Solution

The fourth proportional to 8,660.39, 11,951.42 and 5,122.85 is: 7,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.39 : 11,951.42 = 5,122.85 : x
  2. Step 2: Convert to fraction form
    8,660.39/11,951.42 = 5,122.85/x
  3. Step 3: Cross multiply
    8,660.39x = 11,951.42 × 5,122.85
  4. Step 4: Simplify right side
    8,660.39x = 61,225,246.58
  5. Step 5: Solve for x
    x = 61,225,246.58/8,660.39
  6. Step 6: Final answer
    x = 7,069.58

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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.