Home / 2,080.80-3,121.61-619.92

Finding the Fourth Proportional to 2,080.80, 3,121.61 and 619.92

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Solution

The fourth proportional to 2,080.80, 3,121.61 and 619.92 is: 930.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.80 : 3,121.61 = 619.92 : x
  2. Step 2: Convert to fraction form
    2,080.80/3,121.61 = 619.92/x
  3. Step 3: Cross multiply
    2,080.80x = 3,121.61 × 619.92
  4. Step 4: Simplify right side
    2,080.80x = 1,935,145.37
  5. Step 5: Solve for x
    x = 1,935,145.37/2,080.80
  6. Step 6: Final answer
    x = 930.00

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1.5x scale

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.