Home / 8,869.20-13,287.60-7,216.80

Finding the Fourth Proportional to 8,869.20, 13,287.60 and 7,216.80

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Solution

The fourth proportional to 8,869.20, 13,287.60 and 7,216.80 is: 10,812.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.20 : 13,287.60 = 7,216.80 : x
  2. Step 2: Convert to fraction form
    8,869.20/13,287.60 = 7,216.80/x
  3. Step 3: Cross multiply
    8,869.20x = 13,287.60 × 7,216.80
  4. Step 4: Simplify right side
    8,869.20x = 95,893,951.68
  5. Step 5: Solve for x
    x = 95,893,951.68/8,869.20
  6. Step 6: Final answer
    x = 10,812.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.