Home / 2,911.75-4,364.33-1,427.78

Finding the Fourth Proportional to 2,911.75, 4,364.33 and 1,427.78

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Solution

The fourth proportional to 2,911.75, 4,364.33 and 1,427.78 is: 2,140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.75 : 4,364.33 = 1,427.78 : x
  2. Step 2: Convert to fraction form
    2,911.75/4,364.33 = 1,427.78/x
  3. Step 3: Cross multiply
    2,911.75x = 4,364.33 × 1,427.78
  4. Step 4: Simplify right side
    2,911.75x = 6,231,306.86
  5. Step 5: Solve for x
    x = 6,231,306.86/2,911.75
  6. Step 6: Final answer
    x = 2,140.06

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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.