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Finding the Fourth Proportional to 7,879.47, 10,874.01 and 4,522.42

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Solution

The fourth proportional to 7,879.47, 10,874.01 and 4,522.42 is: 6,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.47 : 10,874.01 = 4,522.42 : x
  2. Step 2: Convert to fraction form
    7,879.47/10,874.01 = 4,522.42/x
  3. Step 3: Cross multiply
    7,879.47x = 10,874.01 × 4,522.42
  4. Step 4: Simplify right side
    7,879.47x = 49,176,840.30
  5. Step 5: Solve for x
    x = 49,176,840.30/7,879.47
  6. Step 6: Final answer
    x = 6,241.14

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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.