Home / 2,155.11-3,232.20-749.35

Finding the Fourth Proportional to 2,155.11, 3,232.20 and 749.35

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Solution

The fourth proportional to 2,155.11, 3,232.20 and 749.35 is: 1,123.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.11 : 3,232.20 = 749.35 : x
  2. Step 2: Convert to fraction form
    2,155.11/3,232.20 = 749.35/x
  3. Step 3: Cross multiply
    2,155.11x = 3,232.20 × 749.35
  4. Step 4: Simplify right side
    2,155.11x = 2,422,055.92
  5. Step 5: Solve for x
    x = 2,422,055.92/2,155.11
  6. Step 6: Final answer
    x = 1,123.87

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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.