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Finding the Fourth Proportional to 5,985.45, 8,965.89 and 3,512.79

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Solution

The fourth proportional to 5,985.45, 8,965.89 and 3,512.79 is: 5,261.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,985.45 : 8,965.89 = 3,512.79 : x
  2. Step 2: Convert to fraction form
    5,985.45/8,965.89 = 3,512.79/x
  3. Step 3: Cross multiply
    5,985.45x = 8,965.89 × 3,512.79
  4. Step 4: Simplify right side
    5,985.45x = 31,495,288.73
  5. Step 5: Solve for x
    x = 31,495,288.73/5,985.45
  6. Step 6: Final answer
    x = 5,261.98

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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.