Home / 5,439.24-7,449.92-5,120.08

Finding the Fourth Proportional to 5,439.24, 7,449.92 and 5,120.08

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Solution

The fourth proportional to 5,439.24, 7,449.92 and 5,120.08 is: 7,012.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.24 : 7,449.92 = 5,120.08 : x
  2. Step 2: Convert to fraction form
    5,439.24/7,449.92 = 5,120.08/x
  3. Step 3: Cross multiply
    5,439.24x = 7,449.92 × 5,120.08
  4. Step 4: Simplify right side
    5,439.24x = 38,144,186.39
  5. Step 5: Solve for x
    x = 38,144,186.39/5,439.24
  6. Step 6: Final answer
    x = 7,012.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.