Home / 2,155.32-3,226.56-1,330.92

Finding the Fourth Proportional to 2,155.32, 3,226.56 and 1,330.92

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Solution

The fourth proportional to 2,155.32, 3,226.56 and 1,330.92 is: 1,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.32 : 3,226.56 = 1,330.92 : x
  2. Step 2: Convert to fraction form
    2,155.32/3,226.56 = 1,330.92/x
  3. Step 3: Cross multiply
    2,155.32x = 3,226.56 × 1,330.92
  4. Step 4: Simplify right side
    2,155.32x = 4,294,293.24
  5. Step 5: Solve for x
    x = 4,294,293.24/2,155.32
  6. Step 6: Final answer
    x = 1,992.42

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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.