Home / 2,155.24-3,226.49-1,330.87

Finding the Fourth Proportional to 2,155.24, 3,226.49 and 1,330.87

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Solution

The fourth proportional to 2,155.24, 3,226.49 and 1,330.87 is: 1,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.24 : 3,226.49 = 1,330.87 : x
  2. Step 2: Convert to fraction form
    2,155.24/3,226.49 = 1,330.87/x
  3. Step 3: Cross multiply
    2,155.24x = 3,226.49 × 1,330.87
  4. Step 4: Simplify right side
    2,155.24x = 4,294,015.96
  5. Step 5: Solve for x
    x = 4,294,015.96/2,155.24
  6. Step 6: Final answer
    x = 1,992.36

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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.