Home / 7,321.14-10,979.28-2,389.68

Finding the Fourth Proportional to 7,321.14, 10,979.28 and 2,389.68

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Solution

The fourth proportional to 7,321.14, 10,979.28 and 2,389.68 is: 3,583.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.14 : 10,979.28 = 2,389.68 : x
  2. Step 2: Convert to fraction form
    7,321.14/10,979.28 = 2,389.68/x
  3. Step 3: Cross multiply
    7,321.14x = 10,979.28 × 2,389.68
  4. Step 4: Simplify right side
    7,321.14x = 26,236,965.83
  5. Step 5: Solve for x
    x = 26,236,965.83/7,321.14
  6. Step 6: Final answer
    x = 3,583.73

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1.5x scale

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.