Home / 2,126.57-3,188.63-826.52

Finding the Fourth Proportional to 2,126.57, 3,188.63 and 826.52

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Solution

The fourth proportional to 2,126.57, 3,188.63 and 826.52 is: 1,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.57 : 3,188.63 = 826.52 : x
  2. Step 2: Convert to fraction form
    2,126.57/3,188.63 = 826.52/x
  3. Step 3: Cross multiply
    2,126.57x = 3,188.63 × 826.52
  4. Step 4: Simplify right side
    2,126.57x = 2,635,454.36
  5. Step 5: Solve for x
    x = 2,635,454.36/2,126.57
  6. Step 6: Final answer
    x = 1,239.30

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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.