Home / 3,849.60-5,765.76-2,981.28

Finding the Fourth Proportional to 3,849.60, 5,765.76 and 2,981.28

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Solution

The fourth proportional to 3,849.60, 5,765.76 and 2,981.28 is: 4,465.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.60 : 5,765.76 = 2,981.28 : x
  2. Step 2: Convert to fraction form
    3,849.60/5,765.76 = 2,981.28/x
  3. Step 3: Cross multiply
    3,849.60x = 5,765.76 × 2,981.28
  4. Step 4: Simplify right side
    3,849.60x = 17,189,344.97
  5. Step 5: Solve for x
    x = 17,189,344.97/3,849.60
  6. Step 6: Final answer
    x = 4,465.23

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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.