Home / 6,899.38-10,351.10-3,979.78

Finding the Fourth Proportional to 6,899.38, 10,351.10 and 3,979.78

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Solution

The fourth proportional to 6,899.38, 10,351.10 and 3,979.78 is: 5,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.38 : 10,351.10 = 3,979.78 : x
  2. Step 2: Convert to fraction form
    6,899.38/10,351.10 = 3,979.78/x
  3. Step 3: Cross multiply
    6,899.38x = 10,351.10 × 3,979.78
  4. Step 4: Simplify right side
    6,899.38x = 41,195,100.76
  5. Step 5: Solve for x
    x = 41,195,100.76/6,899.38
  6. Step 6: Final answer
    x = 5,970.84

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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.