Home / 3,421.44-4,721.90-1,929.83

Finding the Fourth Proportional to 3,421.44, 4,721.90 and 1,929.83

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Solution

The fourth proportional to 3,421.44, 4,721.90 and 1,929.83 is: 2,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.44 : 4,721.90 = 1,929.83 : x
  2. Step 2: Convert to fraction form
    3,421.44/4,721.90 = 1,929.83/x
  3. Step 3: Cross multiply
    3,421.44x = 4,721.90 × 1,929.83
  4. Step 4: Simplify right side
    3,421.44x = 9,112,431.02
  5. Step 5: Solve for x
    x = 9,112,431.02/3,421.44
  6. Step 6: Final answer
    x = 2,663.33

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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.