Home / 7,680.88-11,520.92-4,349.36

Finding the Fourth Proportional to 7,680.88, 11,520.92 and 4,349.36

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Solution

The fourth proportional to 7,680.88, 11,520.92 and 4,349.36 is: 6,523.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.88 : 11,520.92 = 4,349.36 : x
  2. Step 2: Convert to fraction form
    7,680.88/11,520.92 = 4,349.36/x
  3. Step 3: Cross multiply
    7,680.88x = 11,520.92 × 4,349.36
  4. Step 4: Simplify right side
    7,680.88x = 50,108,628.61
  5. Step 5: Solve for x
    x = 50,108,628.61/7,680.88
  6. Step 6: Final answer
    x = 6,523.81

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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.