Home / 3,431.79-5,135.38-2,971.15

Finding the Fourth Proportional to 3,431.79, 5,135.38 and 2,971.15

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Solution

The fourth proportional to 3,431.79, 5,135.38 and 2,971.15 is: 4,446.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.79 : 5,135.38 = 2,971.15 : x
  2. Step 2: Convert to fraction form
    3,431.79/5,135.38 = 2,971.15/x
  3. Step 3: Cross multiply
    3,431.79x = 5,135.38 × 2,971.15
  4. Step 4: Simplify right side
    3,431.79x = 15,257,984.29
  5. Step 5: Solve for x
    x = 15,257,984.29/3,431.79
  6. Step 6: Final answer
    x = 4,446.07

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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.