Home / 5,078.28-7,616.40-1,791.30

Finding the Fourth Proportional to 5,078.28, 7,616.40 and 1,791.30

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Solution

The fourth proportional to 5,078.28, 7,616.40 and 1,791.30 is: 2,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.28 : 7,616.40 = 1,791.30 : x
  2. Step 2: Convert to fraction form
    5,078.28/7,616.40 = 1,791.30/x
  3. Step 3: Cross multiply
    5,078.28x = 7,616.40 × 1,791.30
  4. Step 4: Simplify right side
    5,078.28x = 13,643,257.32
  5. Step 5: Solve for x
    x = 13,643,257.32/5,078.28
  6. Step 6: Final answer
    x = 2,686.59

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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.