Home / 3,469.28-4,787.68-1,897.36

Finding the Fourth Proportional to 3,469.28, 4,787.68 and 1,897.36

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Solution

The fourth proportional to 3,469.28, 4,787.68 and 1,897.36 is: 2,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.28 : 4,787.68 = 1,897.36 : x
  2. Step 2: Convert to fraction form
    3,469.28/4,787.68 = 1,897.36/x
  3. Step 3: Cross multiply
    3,469.28x = 4,787.68 × 1,897.36
  4. Step 4: Simplify right side
    3,469.28x = 9,083,952.52
  5. Step 5: Solve for x
    x = 9,083,952.52/3,469.28
  6. Step 6: Final answer
    x = 2,618.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.