Home / 5,279.72-7,917.24-2,814.08

Finding the Fourth Proportional to 5,279.72, 7,917.24 and 2,814.08

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Solution

The fourth proportional to 5,279.72, 7,917.24 and 2,814.08 is: 4,219.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.72 : 7,917.24 = 2,814.08 : x
  2. Step 2: Convert to fraction form
    5,279.72/7,917.24 = 2,814.08/x
  3. Step 3: Cross multiply
    5,279.72x = 7,917.24 × 2,814.08
  4. Step 4: Simplify right side
    5,279.72x = 22,279,746.74
  5. Step 5: Solve for x
    x = 22,279,746.74/5,279.72
  6. Step 6: Final answer
    x = 4,219.87

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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.