Home / 8,122.60-12,176.70-7,247.80

Finding the Fourth Proportional to 8,122.60, 12,176.70 and 7,247.80

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Solution

The fourth proportional to 8,122.60, 12,176.70 and 7,247.80 is: 10,865.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.60 : 12,176.70 = 7,247.80 : x
  2. Step 2: Convert to fraction form
    8,122.60/12,176.70 = 7,247.80/x
  3. Step 3: Cross multiply
    8,122.60x = 12,176.70 × 7,247.80
  4. Step 4: Simplify right side
    8,122.60x = 88,254,286.26
  5. Step 5: Solve for x
    x = 88,254,286.26/8,122.60
  6. Step 6: Final answer
    x = 10,865.28

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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.