Home / 3,138.68-4,331.40-1,944.92

Finding the Fourth Proportional to 3,138.68, 4,331.40 and 1,944.92

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Solution

The fourth proportional to 3,138.68, 4,331.40 and 1,944.92 is: 2,684.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.68 : 4,331.40 = 1,944.92 : x
  2. Step 2: Convert to fraction form
    3,138.68/4,331.40 = 1,944.92/x
  3. Step 3: Cross multiply
    3,138.68x = 4,331.40 × 1,944.92
  4. Step 4: Simplify right side
    3,138.68x = 8,424,226.49
  5. Step 5: Solve for x
    x = 8,424,226.49/3,138.68
  6. Step 6: Final answer
    x = 2,684.00

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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.