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Finding the Fourth Proportional to 7,508.79, 11,255.22 and 5,161.28

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Solution

The fourth proportional to 7,508.79, 11,255.22 and 5,161.28 is: 7,736.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,508.79 : 11,255.22 = 5,161.28 : x
  2. Step 2: Convert to fraction form
    7,508.79/11,255.22 = 5,161.28/x
  3. Step 3: Cross multiply
    7,508.79x = 11,255.22 × 5,161.28
  4. Step 4: Simplify right side
    7,508.79x = 58,091,285.61
  5. Step 5: Solve for x
    x = 58,091,285.61/7,508.79
  6. Step 6: Final answer
    x = 7,736.44

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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.