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Finding the Fourth Proportional to 6,675.60, 9,212.10 and 3,691.20

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Solution

The fourth proportional to 6,675.60, 9,212.10 and 3,691.20 is: 5,093.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,675.60 : 9,212.10 = 3,691.20 : x
  2. Step 2: Convert to fraction form
    6,675.60/9,212.10 = 3,691.20/x
  3. Step 3: Cross multiply
    6,675.60x = 9,212.10 × 3,691.20
  4. Step 4: Simplify right side
    6,675.60x = 34,003,703.52
  5. Step 5: Solve for x
    x = 34,003,703.52/6,675.60
  6. Step 6: Final answer
    x = 5,093.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.