Home / 3,929.78-5,897.19-1,621.22

Finding the Fourth Proportional to 3,929.78, 5,897.19 and 1,621.22

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Solution

The fourth proportional to 3,929.78, 5,897.19 and 1,621.22 is: 2,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.78 : 5,897.19 = 1,621.22 : x
  2. Step 2: Convert to fraction form
    3,929.78/5,897.19 = 1,621.22/x
  3. Step 3: Cross multiply
    3,929.78x = 5,897.19 × 1,621.22
  4. Step 4: Simplify right side
    3,929.78x = 9,560,642.37
  5. Step 5: Solve for x
    x = 9,560,642.37/3,929.78
  6. Step 6: Final answer
    x = 2,432.87

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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.