Home / 3,431.91-5,135.57-2,971.28

Finding the Fourth Proportional to 3,431.91, 5,135.57 and 2,971.28

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Solution

The fourth proportional to 3,431.91, 5,135.57 and 2,971.28 is: 4,446.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.91 : 5,135.57 = 2,971.28 : x
  2. Step 2: Convert to fraction form
    3,431.91/5,135.57 = 2,971.28/x
  3. Step 3: Cross multiply
    3,431.91x = 5,135.57 × 2,971.28
  4. Step 4: Simplify right side
    3,431.91x = 15,259,225.55
  5. Step 5: Solve for x
    x = 15,259,225.55/3,431.91
  6. Step 6: Final answer
    x = 4,446.27

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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.