Home / 6,115.31-9,167.79-2,420.15

Finding the Fourth Proportional to 6,115.31, 9,167.79 and 2,420.15

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Solution

The fourth proportional to 6,115.31, 9,167.79 and 2,420.15 is: 3,628.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.31 : 9,167.79 = 2,420.15 : x
  2. Step 2: Convert to fraction form
    6,115.31/9,167.79 = 2,420.15/x
  3. Step 3: Cross multiply
    6,115.31x = 9,167.79 × 2,420.15
  4. Step 4: Simplify right side
    6,115.31x = 22,187,391.95
  5. Step 5: Solve for x
    x = 22,187,391.95/6,115.31
  6. Step 6: Final answer
    x = 3,628.17

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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.