Home / 7,679.97-11,520.27-4,391.58

Finding the Fourth Proportional to 7,679.97, 11,520.27 and 4,391.58

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Solution

The fourth proportional to 7,679.97, 11,520.27 and 4,391.58 is: 6,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.97 : 11,520.27 = 4,391.58 : x
  2. Step 2: Convert to fraction form
    7,679.97/11,520.27 = 4,391.58/x
  3. Step 3: Cross multiply
    7,679.97x = 11,520.27 × 4,391.58
  4. Step 4: Simplify right side
    7,679.97x = 50,592,187.33
  5. Step 5: Solve for x
    x = 50,592,187.33/7,679.97
  6. Step 6: Final answer
    x = 6,587.55

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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.