Home / 5,125.16-7,687.60-1,427.24

Finding the Fourth Proportional to 5,125.16, 7,687.60 and 1,427.24

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Solution

The fourth proportional to 5,125.16, 7,687.60 and 1,427.24 is: 2,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.16 : 7,687.60 = 1,427.24 : x
  2. Step 2: Convert to fraction form
    5,125.16/7,687.60 = 1,427.24/x
  3. Step 3: Cross multiply
    5,125.16x = 7,687.60 × 1,427.24
  4. Step 4: Simplify right side
    5,125.16x = 10,972,011.79
  5. Step 5: Solve for x
    x = 10,972,011.79/5,125.16
  6. Step 6: Final answer
    x = 2,140.82

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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.