Home / 3,927.92-5,897.34-1,981.49

Finding the Fourth Proportional to 3,927.92, 5,897.34 and 1,981.49

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Solution

The fourth proportional to 3,927.92, 5,897.34 and 1,981.49 is: 2,974.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.92 : 5,897.34 = 1,981.49 : x
  2. Step 2: Convert to fraction form
    3,927.92/5,897.34 = 1,981.49/x
  3. Step 3: Cross multiply
    3,927.92x = 5,897.34 × 1,981.49
  4. Step 4: Simplify right side
    3,927.92x = 11,685,490.75
  5. Step 5: Solve for x
    x = 11,685,490.75/3,927.92
  6. Step 6: Final answer
    x = 2,974.99

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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.