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Finding the Fourth Proportional to 8,751.85, 12,077.79 and 5,349.42

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Solution

The fourth proportional to 8,751.85, 12,077.79 and 5,349.42 is: 7,382.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.85 : 12,077.79 = 5,349.42 : x
  2. Step 2: Convert to fraction form
    8,751.85/12,077.79 = 5,349.42/x
  3. Step 3: Cross multiply
    8,751.85x = 12,077.79 × 5,349.42
  4. Step 4: Simplify right side
    8,751.85x = 64,609,171.38
  5. Step 5: Solve for x
    x = 64,609,171.38/8,751.85
  6. Step 6: Final answer
    x = 7,382.34

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1.5x scale

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.