Home / 7,319.43-10,979.16-3,426.57

Finding the Fourth Proportional to 7,319.43, 10,979.16 and 3,426.57

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Solution

The fourth proportional to 7,319.43, 10,979.16 and 3,426.57 is: 5,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.43 : 10,979.16 = 3,426.57 : x
  2. Step 2: Convert to fraction form
    7,319.43/10,979.16 = 3,426.57/x
  3. Step 3: Cross multiply
    7,319.43x = 10,979.16 × 3,426.57
  4. Step 4: Simplify right side
    7,319.43x = 37,620,860.28
  5. Step 5: Solve for x
    x = 37,620,860.28/7,319.43
  6. Step 6: Final answer
    x = 5,139.86

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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.