Home / 2,675.60-4,013.40-826.55

Finding the Fourth Proportional to 2,675.60, 4,013.40 and 826.55

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Solution

The fourth proportional to 2,675.60, 4,013.40 and 826.55 is: 1,239.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.60 : 4,013.40 = 826.55 : x
  2. Step 2: Convert to fraction form
    2,675.60/4,013.40 = 826.55/x
  3. Step 3: Cross multiply
    2,675.60x = 4,013.40 × 826.55
  4. Step 4: Simplify right side
    2,675.60x = 3,317,275.77
  5. Step 5: Solve for x
    x = 3,317,275.77/2,675.60
  6. Step 6: Final answer
    x = 1,239.83

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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.