Home / 3,421-4,721.44-1,929.22

Finding the Fourth Proportional to 3,421, 4,721.44 and 1,929.22

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Solution

The fourth proportional to 3,421, 4,721.44 and 1,929.22 is: 2,662.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421 : 4,721.44 = 1,929.22 : x
  2. Step 2: Convert to fraction form
    3,421/4,721.44 = 1,929.22/x
  3. Step 3: Cross multiply
    3,421x = 4,721.44 × 1,929.22
  4. Step 4: Simplify right side
    3,421x = 9,108,696.48
  5. Step 5: Solve for x
    x = 9,108,696.48/3,421
  6. Step 6: Final answer
    x = 2,662.58

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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.