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Finding the Fourth Proportional to 3,370.78, 5,057.37 and 1,728.10

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Solution

The fourth proportional to 3,370.78, 5,057.37 and 1,728.10 is: 2,592.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,370.78 : 5,057.37 = 1,728.10 : x
  2. Step 2: Convert to fraction form
    3,370.78/5,057.37 = 1,728.10/x
  3. Step 3: Cross multiply
    3,370.78x = 5,057.37 × 1,728.10
  4. Step 4: Simplify right side
    3,370.78x = 8,739,641.10
  5. Step 5: Solve for x
    x = 8,739,641.10/3,370.78
  6. Step 6: Final answer
    x = 2,592.77

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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.