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Finding the Fourth Proportional to 2,603.92, 3,908.18 and 1,218.02

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Solution

The fourth proportional to 2,603.92, 3,908.18 and 1,218.02 is: 1,828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.92 : 3,908.18 = 1,218.02 : x
  2. Step 2: Convert to fraction form
    2,603.92/3,908.18 = 1,218.02/x
  3. Step 3: Cross multiply
    2,603.92x = 3,908.18 × 1,218.02
  4. Step 4: Simplify right side
    2,603.92x = 4,760,241.40
  5. Step 5: Solve for x
    x = 4,760,241.40/2,603.92
  6. Step 6: Final answer
    x = 1,828.11

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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.