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Finding the Fourth Proportional to 8,751.90, 12,077.18 and 4,974.57

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Solution

The fourth proportional to 8,751.90, 12,077.18 and 4,974.57 is: 6,864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.90 : 12,077.18 = 4,974.57 : x
  2. Step 2: Convert to fraction form
    8,751.90/12,077.18 = 4,974.57/x
  3. Step 3: Cross multiply
    8,751.90x = 12,077.18 × 4,974.57
  4. Step 4: Simplify right side
    8,751.90x = 60,078,777.31
  5. Step 5: Solve for x
    x = 60,078,777.31/8,751.90
  6. Step 6: Final answer
    x = 6,864.66

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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.