Home / 2,379.68-3,581.92-2,153.28

Finding the Fourth Proportional to 2,379.68, 3,581.92 and 2,153.28

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Solution

The fourth proportional to 2,379.68, 3,581.92 and 2,153.28 is: 3,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.68 : 3,581.92 = 2,153.28 : x
  2. Step 2: Convert to fraction form
    2,379.68/3,581.92 = 2,153.28/x
  3. Step 3: Cross multiply
    2,379.68x = 3,581.92 × 2,153.28
  4. Step 4: Simplify right side
    2,379.68x = 7,712,865.93
  5. Step 5: Solve for x
    x = 7,712,865.93/2,379.68
  6. Step 6: Final answer
    x = 3,241.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.