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Finding the Fourth Proportional to 2,043.36, 3,079.99 and 1,868.06

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Solution

The fourth proportional to 2,043.36, 3,079.99 and 1,868.06 is: 2,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.36 : 3,079.99 = 1,868.06 : x
  2. Step 2: Convert to fraction form
    2,043.36/3,079.99 = 1,868.06/x
  3. Step 3: Cross multiply
    2,043.36x = 3,079.99 × 1,868.06
  4. Step 4: Simplify right side
    2,043.36x = 5,753,616.15
  5. Step 5: Solve for x
    x = 5,753,616.15/2,043.36
  6. Step 6: Final answer
    x = 2,815.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.