Home / 3,138.18-4,330.20-1,793.55

Finding the Fourth Proportional to 3,138.18, 4,330.20 and 1,793.55

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Solution

The fourth proportional to 3,138.18, 4,330.20 and 1,793.55 is: 2,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.18 : 4,330.20 = 1,793.55 : x
  2. Step 2: Convert to fraction form
    3,138.18/4,330.20 = 1,793.55/x
  3. Step 3: Cross multiply
    3,138.18x = 4,330.20 × 1,793.55
  4. Step 4: Simplify right side
    3,138.18x = 7,766,430.21
  5. Step 5: Solve for x
    x = 7,766,430.21/3,138.18
  6. Step 6: Final answer
    x = 2,474.82

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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.