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Finding the Fourth Proportional to 5,581.50, 7,702.50 and 3,486.84

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Solution

The fourth proportional to 5,581.50, 7,702.50 and 3,486.84 is: 4,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.50 : 7,702.50 = 3,486.84 : x
  2. Step 2: Convert to fraction form
    5,581.50/7,702.50 = 3,486.84/x
  3. Step 3: Cross multiply
    5,581.50x = 7,702.50 × 3,486.84
  4. Step 4: Simplify right side
    5,581.50x = 26,857,385.10
  5. Step 5: Solve for x
    x = 26,857,385.10/5,581.50
  6. Step 6: Final answer
    x = 4,811.86

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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.