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Finding the Fourth Proportional to 4,479, 6,675.11 and 4,245.72

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Solution

The fourth proportional to 4,479, 6,675.11 and 4,245.72 is: 6,327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479 : 6,675.11 = 4,245.72 : x
  2. Step 2: Convert to fraction form
    4,479/6,675.11 = 4,245.72/x
  3. Step 3: Cross multiply
    4,479x = 6,675.11 × 4,245.72
  4. Step 4: Simplify right side
    4,479x = 28,340,626.80
  5. Step 5: Solve for x
    x = 28,340,626.80/4,479
  6. Step 6: Final answer
    x = 6,327.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.