Home / 3,432.40-5,149.80-1,678.08

Finding the Fourth Proportional to 3,432.40, 5,149.80 and 1,678.08

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Solution

The fourth proportional to 3,432.40, 5,149.80 and 1,678.08 is: 2,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.40 : 5,149.80 = 1,678.08 : x
  2. Step 2: Convert to fraction form
    3,432.40/5,149.80 = 1,678.08/x
  3. Step 3: Cross multiply
    3,432.40x = 5,149.80 × 1,678.08
  4. Step 4: Simplify right side
    3,432.40x = 8,641,776.38
  5. Step 5: Solve for x
    x = 8,641,776.38/3,432.40
  6. Step 6: Final answer
    x = 2,517.71

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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.