Home / 7,531.20-11,287.20-6,705.60

Finding the Fourth Proportional to 7,531.20, 11,287.20 and 6,705.60

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Solution

The fourth proportional to 7,531.20, 11,287.20 and 6,705.60 is: 10,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,531.20 : 11,287.20 = 6,705.60 : x
  2. Step 2: Convert to fraction form
    7,531.20/11,287.20 = 6,705.60/x
  3. Step 3: Cross multiply
    7,531.20x = 11,287.20 × 6,705.60
  4. Step 4: Simplify right side
    7,531.20x = 75,687,448.32
  5. Step 5: Solve for x
    x = 75,687,448.32/7,531.20
  6. Step 6: Final answer
    x = 10,049.85

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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.