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Finding the Fourth Proportional to 8,610.02, 11,880.42 and 5,072.75

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Solution

The fourth proportional to 8,610.02, 11,880.42 and 5,072.75 is: 6,999.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.02 : 11,880.42 = 5,072.75 : x
  2. Step 2: Convert to fraction form
    8,610.02/11,880.42 = 5,072.75/x
  3. Step 3: Cross multiply
    8,610.02x = 11,880.42 × 5,072.75
  4. Step 4: Simplify right side
    8,610.02x = 60,266,398.47
  5. Step 5: Solve for x
    x = 60,266,398.47/8,610.02
  6. Step 6: Final answer
    x = 6,999.56

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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.