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Finding the Fourth Proportional to 8,978.66, 13,470.03 and 2,739.23

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Solution

The fourth proportional to 8,978.66, 13,470.03 and 2,739.23 is: 4,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978.66 : 13,470.03 = 2,739.23 : x
  2. Step 2: Convert to fraction form
    8,978.66/13,470.03 = 2,739.23/x
  3. Step 3: Cross multiply
    8,978.66x = 13,470.03 × 2,739.23
  4. Step 4: Simplify right side
    8,978.66x = 36,897,510.28
  5. Step 5: Solve for x
    x = 36,897,510.28/8,978.66
  6. Step 6: Final answer
    x = 4,109.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.