Home / 2,634.40-3,947.40-1,400.20

Finding the Fourth Proportional to 2,634.40, 3,947.40 and 1,400.20

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Solution

The fourth proportional to 2,634.40, 3,947.40 and 1,400.20 is: 2,098.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.40 : 3,947.40 = 1,400.20 : x
  2. Step 2: Convert to fraction form
    2,634.40/3,947.40 = 1,400.20/x
  3. Step 3: Cross multiply
    2,634.40x = 3,947.40 × 1,400.20
  4. Step 4: Simplify right side
    2,634.40x = 5,527,149.48
  5. Step 5: Solve for x
    x = 5,527,149.48/2,634.40
  6. Step 6: Final answer
    x = 2,098.07

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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.