Home / 8,979.12-12,392.10-5,202.18

Finding the Fourth Proportional to 8,979.12, 12,392.10 and 5,202.18

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Solution

The fourth proportional to 8,979.12, 12,392.10 and 5,202.18 is: 7,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.12 : 12,392.10 = 5,202.18 : x
  2. Step 2: Convert to fraction form
    8,979.12/12,392.10 = 5,202.18/x
  3. Step 3: Cross multiply
    8,979.12x = 12,392.10 × 5,202.18
  4. Step 4: Simplify right side
    8,979.12x = 64,465,934.78
  5. Step 5: Solve for x
    x = 64,465,934.78/8,979.12
  6. Step 6: Final answer
    x = 7,179.54

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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.