Home / 4,982.80-7,490.40-4,691.20

Finding the Fourth Proportional to 4,982.80, 7,490.40 and 4,691.20

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Solution

The fourth proportional to 4,982.80, 7,490.40 and 4,691.20 is: 7,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,982.80 : 7,490.40 = 4,691.20 : x
  2. Step 2: Convert to fraction form
    4,982.80/7,490.40 = 4,691.20/x
  3. Step 3: Cross multiply
    4,982.80x = 7,490.40 × 4,691.20
  4. Step 4: Simplify right side
    4,982.80x = 35,138,964.48
  5. Step 5: Solve for x
    x = 35,138,964.48/4,982.80
  6. Step 6: Final answer
    x = 7,052.05

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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.