Home / 2,644.12-3,961.28-1,911.88

Finding the Fourth Proportional to 2,644.12, 3,961.28 and 1,911.88

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Solution

The fourth proportional to 2,644.12, 3,961.28 and 1,911.88 is: 2,864.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,644.12 : 3,961.28 = 1,911.88 : x
  2. Step 2: Convert to fraction form
    2,644.12/3,961.28 = 1,911.88/x
  3. Step 3: Cross multiply
    2,644.12x = 3,961.28 × 1,911.88
  4. Step 4: Simplify right side
    2,644.12x = 7,573,492.01
  5. Step 5: Solve for x
    x = 7,573,492.01/2,644.12
  6. Step 6: Final answer
    x = 2,864.28

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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.