Home / 3,571.72-5,351.11-1,720.19

Finding the Fourth Proportional to 3,571.72, 5,351.11 and 1,720.19

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Solution

The fourth proportional to 3,571.72, 5,351.11 and 1,720.19 is: 2,577.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.72 : 5,351.11 = 1,720.19 : x
  2. Step 2: Convert to fraction form
    3,571.72/5,351.11 = 1,720.19/x
  3. Step 3: Cross multiply
    3,571.72x = 5,351.11 × 1,720.19
  4. Step 4: Simplify right side
    3,571.72x = 9,204,925.91
  5. Step 5: Solve for x
    x = 9,204,925.91/3,571.72
  6. Step 6: Final answer
    x = 2,577.17

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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.