Home / 2,811.89-4,220.42-1,426.19

Finding the Fourth Proportional to 2,811.89, 4,220.42 and 1,426.19

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Solution

The fourth proportional to 2,811.89, 4,220.42 and 1,426.19 is: 2,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.89 : 4,220.42 = 1,426.19 : x
  2. Step 2: Convert to fraction form
    2,811.89/4,220.42 = 1,426.19/x
  3. Step 3: Cross multiply
    2,811.89x = 4,220.42 × 1,426.19
  4. Step 4: Simplify right side
    2,811.89x = 6,019,120.80
  5. Step 5: Solve for x
    x = 6,019,120.80/2,811.89
  6. Step 6: Final answer
    x = 2,140.60

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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.