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Finding the Fourth Proportional to 8,993.80, 13,490.71 and 2,420.65

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Solution

The fourth proportional to 8,993.80, 13,490.71 and 2,420.65 is: 3,630.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.80 : 13,490.71 = 2,420.65 : x
  2. Step 2: Convert to fraction form
    8,993.80/13,490.71 = 2,420.65/x
  3. Step 3: Cross multiply
    8,993.80x = 13,490.71 × 2,420.65
  4. Step 4: Simplify right side
    8,993.80x = 32,656,287.16
  5. Step 5: Solve for x
    x = 32,656,287.16/8,993.80
  6. Step 6: Final answer
    x = 3,630.98

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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.