Home / 5,279.36-7,917.24-2,158.88

Finding the Fourth Proportional to 5,279.36, 7,917.24 and 2,158.88

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Solution

The fourth proportional to 5,279.36, 7,917.24 and 2,158.88 is: 3,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.36 : 7,917.24 = 2,158.88 : x
  2. Step 2: Convert to fraction form
    5,279.36/7,917.24 = 2,158.88/x
  3. Step 3: Cross multiply
    5,279.36x = 7,917.24 × 2,158.88
  4. Step 4: Simplify right side
    5,279.36x = 17,092,371.09
  5. Step 5: Solve for x
    x = 17,092,371.09/5,279.36
  6. Step 6: Final answer
    x = 3,237.58

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1.5x scale

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.