Home / 5,279.79-7,285.91-2,921.88

Finding the Fourth Proportional to 5,279.79, 7,285.91 and 2,921.88

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Solution

The fourth proportional to 5,279.79, 7,285.91 and 2,921.88 is: 4,032.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.79 : 7,285.91 = 2,921.88 : x
  2. Step 2: Convert to fraction form
    5,279.79/7,285.91 = 2,921.88/x
  3. Step 3: Cross multiply
    5,279.79x = 7,285.91 × 2,921.88
  4. Step 4: Simplify right side
    5,279.79x = 21,288,540.10
  5. Step 5: Solve for x
    x = 21,288,540.10/5,279.79
  6. Step 6: Final answer
    x = 4,032.08

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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.