Home / 6,979.08-9,639.68-5,218.52

Finding the Fourth Proportional to 6,979.08, 9,639.68 and 5,218.52

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Solution

The fourth proportional to 6,979.08, 9,639.68 and 5,218.52 is: 7,207.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.08 : 9,639.68 = 5,218.52 : x
  2. Step 2: Convert to fraction form
    6,979.08/9,639.68 = 5,218.52/x
  3. Step 3: Cross multiply
    6,979.08x = 9,639.68 × 5,218.52
  4. Step 4: Simplify right side
    6,979.08x = 50,304,862.87
  5. Step 5: Solve for x
    x = 50,304,862.87/6,979.08
  6. Step 6: Final answer
    x = 7,207.95

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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.