Home / 5,112.35-7,055.79-2,874.41

Finding the Fourth Proportional to 5,112.35, 7,055.79 and 2,874.41

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Solution

The fourth proportional to 5,112.35, 7,055.79 and 2,874.41 is: 3,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.35 : 7,055.79 = 2,874.41 : x
  2. Step 2: Convert to fraction form
    5,112.35/7,055.79 = 2,874.41/x
  3. Step 3: Cross multiply
    5,112.35x = 7,055.79 × 2,874.41
  4. Step 4: Simplify right side
    5,112.35x = 20,281,233.33
  5. Step 5: Solve for x
    x = 20,281,233.33/5,112.35
  6. Step 6: Final answer
    x = 3,967.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.