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Finding the Fourth Proportional to 1,865.57, 2,797.81 and 1,343.99

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Solution

The fourth proportional to 1,865.57, 2,797.81 and 1,343.99 is: 2,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.57 : 2,797.81 = 1,343.99 : x
  2. Step 2: Convert to fraction form
    1,865.57/2,797.81 = 1,343.99/x
  3. Step 3: Cross multiply
    1,865.57x = 2,797.81 × 1,343.99
  4. Step 4: Simplify right side
    1,865.57x = 3,760,232.30
  5. Step 5: Solve for x
    x = 3,760,232.30/1,865.57
  6. Step 6: Final answer
    x = 2,015.60

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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.