Home / 3,974.18-5,479.38-2,555.36

Finding the Fourth Proportional to 3,974.18, 5,479.38 and 2,555.36

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Solution

The fourth proportional to 3,974.18, 5,479.38 and 2,555.36 is: 3,523.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.18 : 5,479.38 = 2,555.36 : x
  2. Step 2: Convert to fraction form
    3,974.18/5,479.38 = 2,555.36/x
  3. Step 3: Cross multiply
    3,974.18x = 5,479.38 × 2,555.36
  4. Step 4: Simplify right side
    3,974.18x = 14,001,761.08
  5. Step 5: Solve for x
    x = 14,001,761.08/3,974.18
  6. Step 6: Final answer
    x = 3,523.19

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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.