Home / 2,125.15-3,188.03-826.75

Finding the Fourth Proportional to 2,125.15, 3,188.03 and 826.75

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Solution

The fourth proportional to 2,125.15, 3,188.03 and 826.75 is: 1,240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.15 : 3,188.03 = 826.75 : x
  2. Step 2: Convert to fraction form
    2,125.15/3,188.03 = 826.75/x
  3. Step 3: Cross multiply
    2,125.15x = 3,188.03 × 826.75
  4. Step 4: Simplify right side
    2,125.15x = 2,635,703.80
  5. Step 5: Solve for x
    x = 2,635,703.80/2,125.15
  6. Step 6: Final answer
    x = 1,240.24

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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.