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Finding the Fourth Proportional to 8,727.78, 13,108.44 and 7,481.18

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Solution

The fourth proportional to 8,727.78, 13,108.44 and 7,481.18 is: 11,236.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,727.78 : 13,108.44 = 7,481.18 : x
  2. Step 2: Convert to fraction form
    8,727.78/13,108.44 = 7,481.18/x
  3. Step 3: Cross multiply
    8,727.78x = 13,108.44 × 7,481.18
  4. Step 4: Simplify right side
    8,727.78x = 98,066,599.16
  5. Step 5: Solve for x
    x = 98,066,599.16/8,727.78
  6. Step 6: Final answer
    x = 11,236.14

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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.