Home / 7,680.52-11,517.84-2,485

Finding the Fourth Proportional to 7,680.52, 11,517.84 and 2,485

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Solution

The fourth proportional to 7,680.52, 11,517.84 and 2,485 is: 3,726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.52 : 11,517.84 = 2,485 : x
  2. Step 2: Convert to fraction form
    7,680.52/11,517.84 = 2,485/x
  3. Step 3: Cross multiply
    7,680.52x = 11,517.84 × 2,485
  4. Step 4: Simplify right side
    7,680.52x = 28,621,832.40
  5. Step 5: Solve for x
    x = 28,621,832.40/7,680.52
  6. Step 6: Final answer
    x = 3,726.55

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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.