Home / 3,380.28-5,070.36-1,071.78

Finding the Fourth Proportional to 3,380.28, 5,070.36 and 1,071.78

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Solution

The fourth proportional to 3,380.28, 5,070.36 and 1,071.78 is: 1,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.28 : 5,070.36 = 1,071.78 : x
  2. Step 2: Convert to fraction form
    3,380.28/5,070.36 = 1,071.78/x
  3. Step 3: Cross multiply
    3,380.28x = 5,070.36 × 1,071.78
  4. Step 4: Simplify right side
    3,380.28x = 5,434,310.44
  5. Step 5: Solve for x
    x = 5,434,310.44/3,380.28
  6. Step 6: Final answer
    x = 1,607.65

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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.