Home / 3,980.90-5,496.17-2,724.05

Finding the Fourth Proportional to 3,980.90, 5,496.17 and 2,724.05

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Solution

The fourth proportional to 3,980.90, 5,496.17 and 2,724.05 is: 3,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.90 : 5,496.17 = 2,724.05 : x
  2. Step 2: Convert to fraction form
    3,980.90/5,496.17 = 2,724.05/x
  3. Step 3: Cross multiply
    3,980.90x = 5,496.17 × 2,724.05
  4. Step 4: Simplify right side
    3,980.90x = 14,971,800.79
  5. Step 5: Solve for x
    x = 14,971,800.79/3,980.90
  6. Step 6: Final answer
    x = 3,760.91

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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.