Home / 7,149.40-10,731.30-3,454.60

Finding the Fourth Proportional to 7,149.40, 10,731.30 and 3,454.60

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Solution

The fourth proportional to 7,149.40, 10,731.30 and 3,454.60 is: 5,185.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.40 : 10,731.30 = 3,454.60 : x
  2. Step 2: Convert to fraction form
    7,149.40/10,731.30 = 3,454.60/x
  3. Step 3: Cross multiply
    7,149.40x = 10,731.30 × 3,454.60
  4. Step 4: Simplify right side
    7,149.40x = 37,072,348.98
  5. Step 5: Solve for x
    x = 37,072,348.98/7,149.40
  6. Step 6: Final answer
    x = 5,185.38

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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.