Home / 3,727.80-5,579.55-2,990.70

Finding the Fourth Proportional to 3,727.80, 5,579.55 and 2,990.70

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Solution

The fourth proportional to 3,727.80, 5,579.55 and 2,990.70 is: 4,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,727.80 : 5,579.55 = 2,990.70 : x
  2. Step 2: Convert to fraction form
    3,727.80/5,579.55 = 2,990.70/x
  3. Step 3: Cross multiply
    3,727.80x = 5,579.55 × 2,990.70
  4. Step 4: Simplify right side
    3,727.80x = 16,686,760.19
  5. Step 5: Solve for x
    x = 16,686,760.19/3,727.80
  6. Step 6: Final answer
    x = 4,476.30

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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.