Home / 3,397.28-5,097.62-1,318.72

Finding the Fourth Proportional to 3,397.28, 5,097.62 and 1,318.72

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Solution

The fourth proportional to 3,397.28, 5,097.62 and 1,318.72 is: 1,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.28 : 5,097.62 = 1,318.72 : x
  2. Step 2: Convert to fraction form
    3,397.28/5,097.62 = 1,318.72/x
  3. Step 3: Cross multiply
    3,397.28x = 5,097.62 × 1,318.72
  4. Step 4: Simplify right side
    3,397.28x = 6,722,333.45
  5. Step 5: Solve for x
    x = 6,722,333.45/3,397.28
  6. Step 6: Final answer
    x = 1,978.74

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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.