Home / 2,125.61-2,932.17-1,286.55

Finding the Fourth Proportional to 2,125.61, 2,932.17 and 1,286.55

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Solution

The fourth proportional to 2,125.61, 2,932.17 and 1,286.55 is: 1,774.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.61 : 2,932.17 = 1,286.55 : x
  2. Step 2: Convert to fraction form
    2,125.61/2,932.17 = 1,286.55/x
  3. Step 3: Cross multiply
    2,125.61x = 2,932.17 × 1,286.55
  4. Step 4: Simplify right side
    2,125.61x = 3,772,378.49
  5. Step 5: Solve for x
    x = 3,772,378.49/2,125.61
  6. Step 6: Final answer
    x = 1,774.73

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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.