Home / 5,057.18-6,978.75-3,169.78

Finding the Fourth Proportional to 5,057.18, 6,978.75 and 3,169.78

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Solution

The fourth proportional to 5,057.18, 6,978.75 and 3,169.78 is: 4,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.18 : 6,978.75 = 3,169.78 : x
  2. Step 2: Convert to fraction form
    5,057.18/6,978.75 = 3,169.78/x
  3. Step 3: Cross multiply
    5,057.18x = 6,978.75 × 3,169.78
  4. Step 4: Simplify right side
    5,057.18x = 22,121,121.01
  5. Step 5: Solve for x
    x = 22,121,121.01/5,057.18
  6. Step 6: Final answer
    x = 4,374.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.