Home / 4,168.80-6,251.04-1,978.56

Finding the Fourth Proportional to 4,168.80, 6,251.04 and 1,978.56

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Solution

The fourth proportional to 4,168.80, 6,251.04 and 1,978.56 is: 2,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,168.80 : 6,251.04 = 1,978.56 : x
  2. Step 2: Convert to fraction form
    4,168.80/6,251.04 = 1,978.56/x
  3. Step 3: Cross multiply
    4,168.80x = 6,251.04 × 1,978.56
  4. Step 4: Simplify right side
    4,168.80x = 12,368,057.70
  5. Step 5: Solve for x
    x = 12,368,057.70/4,168.80
  6. Step 6: Final answer
    x = 2,966.81

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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.