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Finding the Fourth Proportional to 8,754.12, 13,131.06 and 5,245.08

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Solution

The fourth proportional to 8,754.12, 13,131.06 and 5,245.08 is: 7,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.12 : 13,131.06 = 5,245.08 : x
  2. Step 2: Convert to fraction form
    8,754.12/13,131.06 = 5,245.08/x
  3. Step 3: Cross multiply
    8,754.12x = 13,131.06 × 5,245.08
  4. Step 4: Simplify right side
    8,754.12x = 68,873,460.18
  5. Step 5: Solve for x
    x = 68,873,460.18/8,754.12
  6. Step 6: Final answer
    x = 7,867.55

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Double scale
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Similar ratio
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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.