Home / 3,147.36-4,721-1,414.76

Finding the Fourth Proportional to 3,147.36, 4,721 and 1,414.76

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Solution

The fourth proportional to 3,147.36, 4,721 and 1,414.76 is: 2,122.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.36 : 4,721 = 1,414.76 : x
  2. Step 2: Convert to fraction form
    3,147.36/4,721 = 1,414.76/x
  3. Step 3: Cross multiply
    3,147.36x = 4,721 × 1,414.76
  4. Step 4: Simplify right side
    3,147.36x = 6,679,081.96
  5. Step 5: Solve for x
    x = 6,679,081.96/3,147.36
  6. Step 6: Final answer
    x = 2,122.12

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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.