Home / 5,387.76-7,439.04-3,399.84

Finding the Fourth Proportional to 5,387.76, 7,439.04 and 3,399.84

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Solution

The fourth proportional to 5,387.76, 7,439.04 and 3,399.84 is: 4,694.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.76 : 7,439.04 = 3,399.84 : x
  2. Step 2: Convert to fraction form
    5,387.76/7,439.04 = 3,399.84/x
  3. Step 3: Cross multiply
    5,387.76x = 7,439.04 × 3,399.84
  4. Step 4: Simplify right side
    5,387.76x = 25,291,545.75
  5. Step 5: Solve for x
    x = 25,291,545.75/5,387.76
  6. Step 6: Final answer
    x = 4,694.26

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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.