Home / 2,811.97-4,220.56-1,426.28

Finding the Fourth Proportional to 2,811.97, 4,220.56 and 1,426.28

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Solution

The fourth proportional to 2,811.97, 4,220.56 and 1,426.28 is: 2,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.97 : 4,220.56 = 1,426.28 : x
  2. Step 2: Convert to fraction form
    2,811.97/4,220.56 = 1,426.28/x
  3. Step 3: Cross multiply
    2,811.97x = 4,220.56 × 1,426.28
  4. Step 4: Simplify right side
    2,811.97x = 6,019,708.58
  5. Step 5: Solve for x
    x = 6,019,708.58/2,811.97
  6. Step 6: Final answer
    x = 2,140.75

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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.