Home / 3,421.14-4,721.49-1,929.36

Finding the Fourth Proportional to 3,421.14, 4,721.49 and 1,929.36

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Solution

The fourth proportional to 3,421.14, 4,721.49 and 1,929.36 is: 2,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.14 : 4,721.49 = 1,929.36 : x
  2. Step 2: Convert to fraction form
    3,421.14/4,721.49 = 1,929.36/x
  3. Step 3: Cross multiply
    3,421.14x = 4,721.49 × 1,929.36
  4. Step 4: Simplify right side
    3,421.14x = 9,109,453.95
  5. Step 5: Solve for x
    x = 9,109,453.95/3,421.14
  6. Step 6: Final answer
    x = 2,662.70

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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.