Home / 3,439.80-5,147.34-2,979.18

Finding the Fourth Proportional to 3,439.80, 5,147.34 and 2,979.18

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Solution

The fourth proportional to 3,439.80, 5,147.34 and 2,979.18 is: 4,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.80 : 5,147.34 = 2,979.18 : x
  2. Step 2: Convert to fraction form
    3,439.80/5,147.34 = 2,979.18/x
  3. Step 3: Cross multiply
    3,439.80x = 5,147.34 × 2,979.18
  4. Step 4: Simplify right side
    3,439.80x = 15,334,852.38
  5. Step 5: Solve for x
    x = 15,334,852.38/3,439.80
  6. Step 6: Final answer
    x = 4,458.07

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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.