Home / 3,151.72-4,727.38-1,396.20

Finding the Fourth Proportional to 3,151.72, 4,727.38 and 1,396.20

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Solution

The fourth proportional to 3,151.72, 4,727.38 and 1,396.20 is: 2,094.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.72 : 4,727.38 = 1,396.20 : x
  2. Step 2: Convert to fraction form
    3,151.72/4,727.38 = 1,396.20/x
  3. Step 3: Cross multiply
    3,151.72x = 4,727.38 × 1,396.20
  4. Step 4: Simplify right side
    3,151.72x = 6,600,388.74
  5. Step 5: Solve for x
    x = 6,600,388.74/3,151.72
  6. Step 6: Final answer
    x = 2,094.22

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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.