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Finding the Fourth Proportional to 3,492.99, 5,231.39 and 3,389.31

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Solution

The fourth proportional to 3,492.99, 5,231.39 and 3,389.31 is: 5,076.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.99 : 5,231.39 = 3,389.31 : x
  2. Step 2: Convert to fraction form
    3,492.99/5,231.39 = 3,389.31/x
  3. Step 3: Cross multiply
    3,492.99x = 5,231.39 × 3,389.31
  4. Step 4: Simplify right side
    3,492.99x = 17,730,785.49
  5. Step 5: Solve for x
    x = 17,730,785.49/3,492.99
  6. Step 6: Final answer
    x = 5,076.11

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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.