Home / 5,125.30-7,687.50-1,427.29

Finding the Fourth Proportional to 5,125.30, 7,687.50 and 1,427.29

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Solution

The fourth proportional to 5,125.30, 7,687.50 and 1,427.29 is: 2,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.30 : 7,687.50 = 1,427.29 : x
  2. Step 2: Convert to fraction form
    5,125.30/7,687.50 = 1,427.29/x
  3. Step 3: Cross multiply
    5,125.30x = 7,687.50 × 1,427.29
  4. Step 4: Simplify right side
    5,125.30x = 10,972,291.88
  5. Step 5: Solve for x
    x = 10,972,291.88/5,125.30
  6. Step 6: Final answer
    x = 2,140.81

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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.