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Finding the Fourth Proportional to 3,389.65, 5,079.00 and 2,773.64

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Solution

The fourth proportional to 3,389.65, 5,079.00 and 2,773.64 is: 4,155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.65 : 5,079.00 = 2,773.64 : x
  2. Step 2: Convert to fraction form
    3,389.65/5,079.00 = 2,773.64/x
  3. Step 3: Cross multiply
    3,389.65x = 5,079.00 × 2,773.64
  4. Step 4: Simplify right side
    3,389.65x = 14,087,340.66
  5. Step 5: Solve for x
    x = 14,087,340.66/3,389.65
  6. Step 6: Final answer
    x = 4,155.99

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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.