Home / 2,125.77-3,186.21-826.14

Finding the Fourth Proportional to 2,125.77, 3,186.21 and 826.14

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Solution

The fourth proportional to 2,125.77, 3,186.21 and 826.14 is: 1,238.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.77 : 3,186.21 = 826.14 : x
  2. Step 2: Convert to fraction form
    2,125.77/3,186.21 = 826.14/x
  3. Step 3: Cross multiply
    2,125.77x = 3,186.21 × 826.14
  4. Step 4: Simplify right side
    2,125.77x = 2,632,255.53
  5. Step 5: Solve for x
    x = 2,632,255.53/2,125.77
  6. Step 6: Final answer
    x = 1,238.26

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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.