Home / 2,080.04-3,119.70-618.80

Finding the Fourth Proportional to 2,080.04, 3,119.70 and 618.80

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Solution

The fourth proportional to 2,080.04, 3,119.70 and 618.80 is: 928.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.04 : 3,119.70 = 618.80 : x
  2. Step 2: Convert to fraction form
    2,080.04/3,119.70 = 618.80/x
  3. Step 3: Cross multiply
    2,080.04x = 3,119.70 × 618.80
  4. Step 4: Simplify right side
    2,080.04x = 1,930,470.36
  5. Step 5: Solve for x
    x = 1,930,470.36/2,080.04
  6. Step 6: Final answer
    x = 928.09

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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.