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Finding the Fourth Proportional to 2,600.80, 3,901.19 and 1,874.99

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Solution

The fourth proportional to 2,600.80, 3,901.19 and 1,874.99 is: 2,812.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.80 : 3,901.19 = 1,874.99 : x
  2. Step 2: Convert to fraction form
    2,600.80/3,901.19 = 1,874.99/x
  3. Step 3: Cross multiply
    2,600.80x = 3,901.19 × 1,874.99
  4. Step 4: Simplify right side
    2,600.80x = 7,314,692.24
  5. Step 5: Solve for x
    x = 7,314,692.24/2,600.80
  6. Step 6: Final answer
    x = 2,812.48

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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.