Home / 7,318.87-10,979.66-2,389.91

Finding the Fourth Proportional to 7,318.87, 10,979.66 and 2,389.91

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Solution

The fourth proportional to 7,318.87, 10,979.66 and 2,389.91 is: 3,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.87 : 10,979.66 = 2,389.91 : x
  2. Step 2: Convert to fraction form
    7,318.87/10,979.66 = 2,389.91/x
  3. Step 3: Cross multiply
    7,318.87x = 10,979.66 × 2,389.91
  4. Step 4: Simplify right side
    7,318.87x = 26,240,350.31
  5. Step 5: Solve for x
    x = 26,240,350.31/7,318.87
  6. Step 6: Final answer
    x = 3,585.30

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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.