Home / 5,287.20-7,920.03-2,505.44

Finding the Fourth Proportional to 5,287.20, 7,920.03 and 2,505.44

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Solution

The fourth proportional to 5,287.20, 7,920.03 and 2,505.44 is: 3,753.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.20 : 7,920.03 = 2,505.44 : x
  2. Step 2: Convert to fraction form
    5,287.20/7,920.03 = 2,505.44/x
  3. Step 3: Cross multiply
    5,287.20x = 7,920.03 × 2,505.44
  4. Step 4: Simplify right side
    5,287.20x = 19,843,159.96
  5. Step 5: Solve for x
    x = 19,843,159.96/5,287.20
  6. Step 6: Final answer
    x = 3,753.06

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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.