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Finding the Fourth Proportional to 8,754.64, 12,081 and 4,775.44

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Solution

The fourth proportional to 8,754.64, 12,081 and 4,775.44 is: 6,589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.64 : 12,081 = 4,775.44 : x
  2. Step 2: Convert to fraction form
    8,754.64/12,081 = 4,775.44/x
  3. Step 3: Cross multiply
    8,754.64x = 12,081 × 4,775.44
  4. Step 4: Simplify right side
    8,754.64x = 57,692,090.64
  5. Step 5: Solve for x
    x = 57,692,090.64/8,754.64
  6. Step 6: Final answer
    x = 6,589.89

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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.