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Finding the Fourth Proportional to 7,876.96, 11,818.31 and 3,662.16

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Solution

The fourth proportional to 7,876.96, 11,818.31 and 3,662.16 is: 5,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.96 : 11,818.31 = 3,662.16 : x
  2. Step 2: Convert to fraction form
    7,876.96/11,818.31 = 3,662.16/x
  3. Step 3: Cross multiply
    7,876.96x = 11,818.31 × 3,662.16
  4. Step 4: Simplify right side
    7,876.96x = 43,280,542.15
  5. Step 5: Solve for x
    x = 43,280,542.15/7,876.96
  6. Step 6: Final answer
    x = 5,494.57

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1.5x scale

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.