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Finding the Fourth Proportional to 11,881.82, 17,822.72 and 3,116.72

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Solution

The fourth proportional to 11,881.82, 17,822.72 and 3,116.72 is: 4,675.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,881.82 : 17,822.72 = 3,116.72 : x
  2. Step 2: Convert to fraction form
    11,881.82/17,822.72 = 3,116.72/x
  3. Step 3: Cross multiply
    11,881.82x = 17,822.72 × 3,116.72
  4. Step 4: Simplify right side
    11,881.82x = 55,548,480.23
  5. Step 5: Solve for x
    x = 55,548,480.23/11,881.82
  6. Step 6: Final answer
    x = 4,675.08

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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.