Home / 5,211.28-7,818.40-2,745.52

Finding the Fourth Proportional to 5,211.28, 7,818.40 and 2,745.52

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Solution

The fourth proportional to 5,211.28, 7,818.40 and 2,745.52 is: 4,119.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.28 : 7,818.40 = 2,745.52 : x
  2. Step 2: Convert to fraction form
    5,211.28/7,818.40 = 2,745.52/x
  3. Step 3: Cross multiply
    5,211.28x = 7,818.40 × 2,745.52
  4. Step 4: Simplify right side
    5,211.28x = 21,465,573.57
  5. Step 5: Solve for x
    x = 21,465,573.57/5,211.28
  6. Step 6: Final answer
    x = 4,119.06

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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.