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Finding the Fourth Proportional to 8,657.79, 11,951.73 and 5,072.25

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Solution

The fourth proportional to 8,657.79, 11,951.73 and 5,072.25 is: 7,002.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.79 : 11,951.73 = 5,072.25 : x
  2. Step 2: Convert to fraction form
    8,657.79/11,951.73 = 5,072.25/x
  3. Step 3: Cross multiply
    8,657.79x = 11,951.73 × 5,072.25
  4. Step 4: Simplify right side
    8,657.79x = 60,622,162.49
  5. Step 5: Solve for x
    x = 60,622,162.49/8,657.79
  6. Step 6: Final answer
    x = 7,002.04

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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.