Home / 3,140.20-4,712.10-1,193.80

Finding the Fourth Proportional to 3,140.20, 4,712.10 and 1,193.80

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Solution

The fourth proportional to 3,140.20, 4,712.10 and 1,193.80 is: 1,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.20 : 4,712.10 = 1,193.80 : x
  2. Step 2: Convert to fraction form
    3,140.20/4,712.10 = 1,193.80/x
  3. Step 3: Cross multiply
    3,140.20x = 4,712.10 × 1,193.80
  4. Step 4: Simplify right side
    3,140.20x = 5,625,304.98
  5. Step 5: Solve for x
    x = 5,625,304.98/3,140.20
  6. Step 6: Final answer
    x = 1,791.38

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1.5x scale

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.