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Finding the Fourth Proportional to 8,751.65, 12,077.17 and 4,772.79

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Solution

The fourth proportional to 8,751.65, 12,077.17 and 4,772.79 is: 6,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.65 : 12,077.17 = 4,772.79 : x
  2. Step 2: Convert to fraction form
    8,751.65/12,077.17 = 4,772.79/x
  3. Step 3: Cross multiply
    8,751.65x = 12,077.17 × 4,772.79
  4. Step 4: Simplify right side
    8,751.65x = 57,641,784.27
  5. Step 5: Solve for x
    x = 57,641,784.27/8,751.65
  6. Step 6: Final answer
    x = 6,586.39

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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.