Home / 2,851.11-3,933.09-1,967.40

Finding the Fourth Proportional to 2,851.11, 3,933.09 and 1,967.40

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Solution

The fourth proportional to 2,851.11, 3,933.09 and 1,967.40 is: 2,714.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.11 : 3,933.09 = 1,967.40 : x
  2. Step 2: Convert to fraction form
    2,851.11/3,933.09 = 1,967.40/x
  3. Step 3: Cross multiply
    2,851.11x = 3,933.09 × 1,967.40
  4. Step 4: Simplify right side
    2,851.11x = 7,737,961.27
  5. Step 5: Solve for x
    x = 7,737,961.27/2,851.11
  6. Step 6: Final answer
    x = 2,714.02

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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.