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Finding the Fourth Proportional to 8,991.73, 13,490.03 and 3,148.80

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Solution

The fourth proportional to 8,991.73, 13,490.03 and 3,148.80 is: 4,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.73 : 13,490.03 = 3,148.80 : x
  2. Step 2: Convert to fraction form
    8,991.73/13,490.03 = 3,148.80/x
  3. Step 3: Cross multiply
    8,991.73x = 13,490.03 × 3,148.80
  4. Step 4: Simplify right side
    8,991.73x = 42,477,406.46
  5. Step 5: Solve for x
    x = 42,477,406.46/8,991.73
  6. Step 6: Final answer
    x = 4,724.05

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Why These Related Problems?

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