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Finding the Fourth Proportional to 8,760.97, 12,091.20 and 4,985.06

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Solution

The fourth proportional to 8,760.97, 12,091.20 and 4,985.06 is: 6,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.97 : 12,091.20 = 4,985.06 : x
  2. Step 2: Convert to fraction form
    8,760.97/12,091.20 = 4,985.06/x
  3. Step 3: Cross multiply
    8,760.97x = 12,091.20 × 4,985.06
  4. Step 4: Simplify right side
    8,760.97x = 60,275,297.02
  5. Step 5: Solve for x
    x = 60,275,297.02/8,760.97
  6. Step 6: Final answer
    x = 6,879.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.