Home / 3,138.24-4,329.54-2,193.78

Finding the Fourth Proportional to 3,138.24, 4,329.54 and 2,193.78

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Solution

The fourth proportional to 3,138.24, 4,329.54 and 2,193.78 is: 3,026.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.24 : 4,329.54 = 2,193.78 : x
  2. Step 2: Convert to fraction form
    3,138.24/4,329.54 = 2,193.78/x
  3. Step 3: Cross multiply
    3,138.24x = 4,329.54 × 2,193.78
  4. Step 4: Simplify right side
    3,138.24x = 9,498,058.26
  5. Step 5: Solve for x
    x = 9,498,058.26/3,138.24
  6. Step 6: Final answer
    x = 3,026.56

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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.