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Finding the Fourth Proportional to 2,774.72, 4,157.29 and 1,949.13

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Solution

The fourth proportional to 2,774.72, 4,157.29 and 1,949.13 is: 2,920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.72 : 4,157.29 = 1,949.13 : x
  2. Step 2: Convert to fraction form
    2,774.72/4,157.29 = 1,949.13/x
  3. Step 3: Cross multiply
    2,774.72x = 4,157.29 × 1,949.13
  4. Step 4: Simplify right side
    2,774.72x = 8,103,101.09
  5. Step 5: Solve for x
    x = 8,103,101.09/2,774.72
  6. Step 6: Final answer
    x = 2,920.33

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1.5x scale

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.