Home / 2,143.56-3,213.06-826.92

Finding the Fourth Proportional to 2,143.56, 3,213.06 and 826.92

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Solution

The fourth proportional to 2,143.56, 3,213.06 and 826.92 is: 1,239.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.56 : 3,213.06 = 826.92 : x
  2. Step 2: Convert to fraction form
    2,143.56/3,213.06 = 826.92/x
  3. Step 3: Cross multiply
    2,143.56x = 3,213.06 × 826.92
  4. Step 4: Simplify right side
    2,143.56x = 2,656,943.58
  5. Step 5: Solve for x
    x = 2,656,943.58/2,143.56
  6. Step 6: Final answer
    x = 1,239.50

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Double scale
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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.