Home / 8,979.26-12,389.50-5,202.20

Finding the Fourth Proportional to 8,979.26, 12,389.50 and 5,202.20

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Solution

The fourth proportional to 8,979.26, 12,389.50 and 5,202.20 is: 7,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.26 : 12,389.50 = 5,202.20 : x
  2. Step 2: Convert to fraction form
    8,979.26/12,389.50 = 5,202.20/x
  3. Step 3: Cross multiply
    8,979.26x = 12,389.50 × 5,202.20
  4. Step 4: Simplify right side
    8,979.26x = 64,452,656.90
  5. Step 5: Solve for x
    x = 64,452,656.90/8,979.26
  6. Step 6: Final answer
    x = 7,177.95

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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.