Home / 5,107.28-7,657.02-2,640.52

Finding the Fourth Proportional to 5,107.28, 7,657.02 and 2,640.52

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Solution

The fourth proportional to 5,107.28, 7,657.02 and 2,640.52 is: 3,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.28 : 7,657.02 = 2,640.52 : x
  2. Step 2: Convert to fraction form
    5,107.28/7,657.02 = 2,640.52/x
  3. Step 3: Cross multiply
    5,107.28x = 7,657.02 × 2,640.52
  4. Step 4: Simplify right side
    5,107.28x = 20,218,501.25
  5. Step 5: Solve for x
    x = 20,218,501.25/5,107.28
  6. Step 6: Final answer
    x = 3,958.76

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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.