Home / 5,278.72-7,914.04-2,811.48

Finding the Fourth Proportional to 5,278.72, 7,914.04 and 2,811.48

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Solution

The fourth proportional to 5,278.72, 7,914.04 and 2,811.48 is: 4,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.72 : 7,914.04 = 2,811.48 : x
  2. Step 2: Convert to fraction form
    5,278.72/7,914.04 = 2,811.48/x
  3. Step 3: Cross multiply
    5,278.72x = 7,914.04 × 2,811.48
  4. Step 4: Simplify right side
    5,278.72x = 22,250,165.18
  5. Step 5: Solve for x
    x = 22,250,165.18/5,278.72
  6. Step 6: Final answer
    x = 4,215.07

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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.