Home / 5,286.72-7,927.74-2,821.08

Finding the Fourth Proportional to 5,286.72, 7,927.74 and 2,821.08

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Solution

The fourth proportional to 5,286.72, 7,927.74 and 2,821.08 is: 4,230.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.72 : 7,927.74 = 2,821.08 : x
  2. Step 2: Convert to fraction form
    5,286.72/7,927.74 = 2,821.08/x
  3. Step 3: Cross multiply
    5,286.72x = 7,927.74 × 2,821.08
  4. Step 4: Simplify right side
    5,286.72x = 22,364,788.76
  5. Step 5: Solve for x
    x = 22,364,788.76/5,286.72
  6. Step 6: Final answer
    x = 4,230.37

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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.