Home / 3,724.32-5,139.40-2,231.36

Finding the Fourth Proportional to 3,724.32, 5,139.40 and 2,231.36

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Solution

The fourth proportional to 3,724.32, 5,139.40 and 2,231.36 is: 3,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.32 : 5,139.40 = 2,231.36 : x
  2. Step 2: Convert to fraction form
    3,724.32/5,139.40 = 2,231.36/x
  3. Step 3: Cross multiply
    3,724.32x = 5,139.40 × 2,231.36
  4. Step 4: Simplify right side
    3,724.32x = 11,467,851.58
  5. Step 5: Solve for x
    x = 11,467,851.58/3,724.32
  6. Step 6: Final answer
    x = 3,079.18

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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.