Home / 5,107.90-7,657.96-2,641.15

Finding the Fourth Proportional to 5,107.90, 7,657.96 and 2,641.15

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Solution

The fourth proportional to 5,107.90, 7,657.96 and 2,641.15 is: 3,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.90 : 7,657.96 = 2,641.15 : x
  2. Step 2: Convert to fraction form
    5,107.90/7,657.96 = 2,641.15/x
  3. Step 3: Cross multiply
    5,107.90x = 7,657.96 × 2,641.15
  4. Step 4: Simplify right side
    5,107.90x = 20,225,769.56
  5. Step 5: Solve for x
    x = 20,225,769.56/5,107.90
  6. Step 6: Final answer
    x = 3,959.70

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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.