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Finding the Fourth Proportional to 8,961.82, 12,365.28 and 5,184.88

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Solution

The fourth proportional to 8,961.82, 12,365.28 and 5,184.88 is: 7,153.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.82 : 12,365.28 = 5,184.88 : x
  2. Step 2: Convert to fraction form
    8,961.82/12,365.28 = 5,184.88/x
  3. Step 3: Cross multiply
    8,961.82x = 12,365.28 × 5,184.88
  4. Step 4: Simplify right side
    8,961.82x = 64,112,462.05
  5. Step 5: Solve for x
    x = 64,112,462.05/8,961.82
  6. Step 6: Final answer
    x = 7,153.96

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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.