Home / 7,680.24-11,520.36-2,486.52

Finding the Fourth Proportional to 7,680.24, 11,520.36 and 2,486.52

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Solution

The fourth proportional to 7,680.24, 11,520.36 and 2,486.52 is: 3,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.24 : 11,520.36 = 2,486.52 : x
  2. Step 2: Convert to fraction form
    7,680.24/11,520.36 = 2,486.52/x
  3. Step 3: Cross multiply
    7,680.24x = 11,520.36 × 2,486.52
  4. Step 4: Simplify right side
    7,680.24x = 28,645,605.55
  5. Step 5: Solve for x
    x = 28,645,605.55/7,680.24
  6. Step 6: Final answer
    x = 3,729.78

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1.5x scale

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.