Home / 2,125.54-2,932.68-1,286.71

Finding the Fourth Proportional to 2,125.54, 2,932.68 and 1,286.71

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Solution

The fourth proportional to 2,125.54, 2,932.68 and 1,286.71 is: 1,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.54 : 2,932.68 = 1,286.71 : x
  2. Step 2: Convert to fraction form
    2,125.54/2,932.68 = 1,286.71/x
  3. Step 3: Cross multiply
    2,125.54x = 2,932.68 × 1,286.71
  4. Step 4: Simplify right side
    2,125.54x = 3,773,508.68
  5. Step 5: Solve for x
    x = 3,773,508.68/2,125.54
  6. Step 6: Final answer
    x = 1,775.32

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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.