Home / 3,626.12-5,439.85-1,678.31

Finding the Fourth Proportional to 3,626.12, 5,439.85 and 1,678.31

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Solution

The fourth proportional to 3,626.12, 5,439.85 and 1,678.31 is: 2,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,626.12 : 5,439.85 = 1,678.31 : x
  2. Step 2: Convert to fraction form
    3,626.12/5,439.85 = 1,678.31/x
  3. Step 3: Cross multiply
    3,626.12x = 5,439.85 × 1,678.31
  4. Step 4: Simplify right side
    3,626.12x = 9,129,764.06
  5. Step 5: Solve for x
    x = 9,129,764.06/3,626.12
  6. Step 6: Final answer
    x = 2,517.78

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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.