Home / 6,979.68-10,469.76-3,515.04

Finding the Fourth Proportional to 6,979.68, 10,469.76 and 3,515.04

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Solution

The fourth proportional to 6,979.68, 10,469.76 and 3,515.04 is: 5,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.68 : 10,469.76 = 3,515.04 : x
  2. Step 2: Convert to fraction form
    6,979.68/10,469.76 = 3,515.04/x
  3. Step 3: Cross multiply
    6,979.68x = 10,469.76 × 3,515.04
  4. Step 4: Simplify right side
    6,979.68x = 36,801,625.19
  5. Step 5: Solve for x
    x = 36,801,625.19/6,979.68
  6. Step 6: Final answer
    x = 5,272.68

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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.