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Finding the Fourth Proportional to 8,751.80, 13,113.94 and 5,459.96

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Solution

The fourth proportional to 8,751.80, 13,113.94 and 5,459.96 is: 8,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.80 : 13,113.94 = 5,459.96 : x
  2. Step 2: Convert to fraction form
    8,751.80/13,113.94 = 5,459.96/x
  3. Step 3: Cross multiply
    8,751.80x = 13,113.94 × 5,459.96
  4. Step 4: Simplify right side
    8,751.80x = 71,601,587.84
  5. Step 5: Solve for x
    x = 71,601,587.84/8,751.80
  6. Step 6: Final answer
    x = 8,181.36

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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.