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Finding the Fourth Proportional to 7,879.60, 10,876.08 and 5,522.32

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Solution

The fourth proportional to 7,879.60, 10,876.08 and 5,522.32 is: 7,622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.60 : 10,876.08 = 5,522.32 : x
  2. Step 2: Convert to fraction form
    7,879.60/10,876.08 = 5,522.32/x
  3. Step 3: Cross multiply
    7,879.60x = 10,876.08 × 5,522.32
  4. Step 4: Simplify right side
    7,879.60x = 60,061,194.11
  5. Step 5: Solve for x
    x = 60,061,194.11/7,879.60
  6. Step 6: Final answer
    x = 7,622.37

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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.