Home / 6,540.75-9,013.68-4,178.79

Finding the Fourth Proportional to 6,540.75, 9,013.68 and 4,178.79

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Solution

The fourth proportional to 6,540.75, 9,013.68 and 4,178.79 is: 5,758.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,540.75 : 9,013.68 = 4,178.79 : x
  2. Step 2: Convert to fraction form
    6,540.75/9,013.68 = 4,178.79/x
  3. Step 3: Cross multiply
    6,540.75x = 9,013.68 × 4,178.79
  4. Step 4: Simplify right side
    6,540.75x = 37,666,275.85
  5. Step 5: Solve for x
    x = 37,666,275.85/6,540.75
  6. Step 6: Final answer
    x = 5,758.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.