Home / 3,469.20-4,787.40-1,897.20

Finding the Fourth Proportional to 3,469.20, 4,787.40 and 1,897.20

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Solution

The fourth proportional to 3,469.20, 4,787.40 and 1,897.20 is: 2,618.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.20 : 4,787.40 = 1,897.20 : x
  2. Step 2: Convert to fraction form
    3,469.20/4,787.40 = 1,897.20/x
  3. Step 3: Cross multiply
    3,469.20x = 4,787.40 × 1,897.20
  4. Step 4: Simplify right side
    3,469.20x = 9,082,655.28
  5. Step 5: Solve for x
    x = 9,082,655.28/3,469.20
  6. Step 6: Final answer
    x = 2,618.08

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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.