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Finding the Fourth Proportional to 8,740.80, 12,034.44 and 8,144.64

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Solution

The fourth proportional to 8,740.80, 12,034.44 and 8,144.64 is: 11,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.80 : 12,034.44 = 8,144.64 : x
  2. Step 2: Convert to fraction form
    8,740.80/12,034.44 = 8,144.64/x
  3. Step 3: Cross multiply
    8,740.80x = 12,034.44 × 8,144.64
  4. Step 4: Simplify right side
    8,740.80x = 98,016,181.40
  5. Step 5: Solve for x
    x = 98,016,181.40/8,740.80
  6. Step 6: Final answer
    x = 11,213.64

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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.