Home / 5,174.19-7,761.19-1,278.60

Finding the Fourth Proportional to 5,174.19, 7,761.19 and 1,278.60

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Solution

The fourth proportional to 5,174.19, 7,761.19 and 1,278.60 is: 1,917.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.19 : 7,761.19 = 1,278.60 : x
  2. Step 2: Convert to fraction form
    5,174.19/7,761.19 = 1,278.60/x
  3. Step 3: Cross multiply
    5,174.19x = 7,761.19 × 1,278.60
  4. Step 4: Simplify right side
    5,174.19x = 9,923,457.53
  5. Step 5: Solve for x
    x = 9,923,457.53/5,174.19
  6. Step 6: Final answer
    x = 1,917.88

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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.