Home / 3,389.40-5,080.02-1,929.48

Finding the Fourth Proportional to 3,389.40, 5,080.02 and 1,929.48

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Solution

The fourth proportional to 3,389.40, 5,080.02 and 1,929.48 is: 2,891.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.40 : 5,080.02 = 1,929.48 : x
  2. Step 2: Convert to fraction form
    3,389.40/5,080.02 = 1,929.48/x
  3. Step 3: Cross multiply
    3,389.40x = 5,080.02 × 1,929.48
  4. Step 4: Simplify right side
    3,389.40x = 9,801,796.99
  5. Step 5: Solve for x
    x = 9,801,796.99/3,389.40
  6. Step 6: Final answer
    x = 2,891.90

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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.