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Finding the Fourth Proportional to 8,961.04, 12,360.52 and 7,072.02

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Solution

The fourth proportional to 8,961.04, 12,360.52 and 7,072.02 is: 9,754.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.04 : 12,360.52 = 7,072.02 : x
  2. Step 2: Convert to fraction form
    8,961.04/12,360.52 = 7,072.02/x
  3. Step 3: Cross multiply
    8,961.04x = 12,360.52 × 7,072.02
  4. Step 4: Simplify right side
    8,961.04x = 87,413,844.65
  5. Step 5: Solve for x
    x = 87,413,844.65/8,961.04
  6. Step 6: Final answer
    x = 9,754.88

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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.