Home / 2,125.32-3,188.39-826.70

Finding the Fourth Proportional to 2,125.32, 3,188.39 and 826.70

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Solution

The fourth proportional to 2,125.32, 3,188.39 and 826.70 is: 1,240.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.32 : 3,188.39 = 826.70 : x
  2. Step 2: Convert to fraction form
    2,125.32/3,188.39 = 826.70/x
  3. Step 3: Cross multiply
    2,125.32x = 3,188.39 × 826.70
  4. Step 4: Simplify right side
    2,125.32x = 2,635,821.94
  5. Step 5: Solve for x
    x = 2,635,821.94/2,125.32
  6. Step 6: Final answer
    x = 1,240.20

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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.