Home / 5,412.78-8,112.63-2,635.29

Finding the Fourth Proportional to 5,412.78, 8,112.63 and 2,635.29

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Solution

The fourth proportional to 5,412.78, 8,112.63 and 2,635.29 is: 3,949.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.78 : 8,112.63 = 2,635.29 : x
  2. Step 2: Convert to fraction form
    5,412.78/8,112.63 = 2,635.29/x
  3. Step 3: Cross multiply
    5,412.78x = 8,112.63 × 2,635.29
  4. Step 4: Simplify right side
    5,412.78x = 21,379,132.71
  5. Step 5: Solve for x
    x = 21,379,132.71/5,412.78
  6. Step 6: Final answer
    x = 3,949.75

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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.