Home / 5,267.91-7,898.79-1,981.26

Finding the Fourth Proportional to 5,267.91, 7,898.79 and 1,981.26

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Solution

The fourth proportional to 5,267.91, 7,898.79 and 1,981.26 is: 2,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,267.91 : 7,898.79 = 1,981.26 : x
  2. Step 2: Convert to fraction form
    5,267.91/7,898.79 = 1,981.26/x
  3. Step 3: Cross multiply
    5,267.91x = 7,898.79 × 1,981.26
  4. Step 4: Simplify right side
    5,267.91x = 15,649,556.68
  5. Step 5: Solve for x
    x = 15,649,556.68/5,267.91
  6. Step 6: Final answer
    x = 2,970.73

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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.