Home / 2,839.67-3,919.30-1,644.85

Finding the Fourth Proportional to 2,839.67, 3,919.30 and 1,644.85

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Solution

The fourth proportional to 2,839.67, 3,919.30 and 1,644.85 is: 2,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.67 : 3,919.30 = 1,644.85 : x
  2. Step 2: Convert to fraction form
    2,839.67/3,919.30 = 1,644.85/x
  3. Step 3: Cross multiply
    2,839.67x = 3,919.30 × 1,644.85
  4. Step 4: Simplify right side
    2,839.67x = 6,446,641.01
  5. Step 5: Solve for x
    x = 6,446,641.01/2,839.67
  6. Step 6: Final answer
    x = 2,270.21

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1.5x scale

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.