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Finding the Fourth Proportional to 2,757.72, 3,805.72 and 1,579.16

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Solution

The fourth proportional to 2,757.72, 3,805.72 and 1,579.16 is: 2,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.72 : 3,805.72 = 1,579.16 : x
  2. Step 2: Convert to fraction form
    2,757.72/3,805.72 = 1,579.16/x
  3. Step 3: Cross multiply
    2,757.72x = 3,805.72 × 1,579.16
  4. Step 4: Simplify right side
    2,757.72x = 6,009,840.80
  5. Step 5: Solve for x
    x = 6,009,840.80/2,757.72
  6. Step 6: Final answer
    x = 2,179.28

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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.