Home / 2,080.17-3,121.79-984.77

Finding the Fourth Proportional to 2,080.17, 3,121.79 and 984.77

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Solution

The fourth proportional to 2,080.17, 3,121.79 and 984.77 is: 1,477.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.17 : 3,121.79 = 984.77 : x
  2. Step 2: Convert to fraction form
    2,080.17/3,121.79 = 984.77/x
  3. Step 3: Cross multiply
    2,080.17x = 3,121.79 × 984.77
  4. Step 4: Simplify right side
    2,080.17x = 3,074,259.41
  5. Step 5: Solve for x
    x = 3,074,259.41/2,080.17
  6. Step 6: Final answer
    x = 1,477.89

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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.