Home / 5,115.40-7,677.15-1,996.90

Finding the Fourth Proportional to 5,115.40, 7,677.15 and 1,996.90

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Solution

The fourth proportional to 5,115.40, 7,677.15 and 1,996.90 is: 2,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.40 : 7,677.15 = 1,996.90 : x
  2. Step 2: Convert to fraction form
    5,115.40/7,677.15 = 1,996.90/x
  3. Step 3: Cross multiply
    5,115.40x = 7,677.15 × 1,996.90
  4. Step 4: Simplify right side
    5,115.40x = 15,330,500.84
  5. Step 5: Solve for x
    x = 15,330,500.84/5,115.40
  6. Step 6: Final answer
    x = 2,996.93

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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.