Home / 3,811.57-5,707.56-2,639.90

Finding the Fourth Proportional to 3,811.57, 5,707.56 and 2,639.90

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Solution

The fourth proportional to 3,811.57, 5,707.56 and 2,639.90 is: 3,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.57 : 5,707.56 = 2,639.90 : x
  2. Step 2: Convert to fraction form
    3,811.57/5,707.56 = 2,639.90/x
  3. Step 3: Cross multiply
    3,811.57x = 5,707.56 × 2,639.90
  4. Step 4: Simplify right side
    3,811.57x = 15,067,387.64
  5. Step 5: Solve for x
    x = 15,067,387.64/3,811.57
  6. Step 6: Final answer
    x = 3,953.07

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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.