Home / 3,100.28-4,276.27-1,980.73

Finding the Fourth Proportional to 3,100.28, 4,276.27 and 1,980.73

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Solution

The fourth proportional to 3,100.28, 4,276.27 and 1,980.73 is: 2,732.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.28 : 4,276.27 = 1,980.73 : x
  2. Step 2: Convert to fraction form
    3,100.28/4,276.27 = 1,980.73/x
  3. Step 3: Cross multiply
    3,100.28x = 4,276.27 × 1,980.73
  4. Step 4: Simplify right side
    3,100.28x = 8,470,114.47
  5. Step 5: Solve for x
    x = 8,470,114.47/3,100.28
  6. Step 6: Final answer
    x = 2,732.05

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1.5x scale

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.