Home / 5,149.71-7,107.15-2,881.87

Finding the Fourth Proportional to 5,149.71, 7,107.15 and 2,881.87

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Solution

The fourth proportional to 5,149.71, 7,107.15 and 2,881.87 is: 3,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.71 : 7,107.15 = 2,881.87 : x
  2. Step 2: Convert to fraction form
    5,149.71/7,107.15 = 2,881.87/x
  3. Step 3: Cross multiply
    5,149.71x = 7,107.15 × 2,881.87
  4. Step 4: Simplify right side
    5,149.71x = 20,481,882.37
  5. Step 5: Solve for x
    x = 20,481,882.37/5,149.71
  6. Step 6: Final answer
    x = 3,977.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.