Home / 2,811.84-4,220.36-1,426.19

Finding the Fourth Proportional to 2,811.84, 4,220.36 and 1,426.19

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Solution

The fourth proportional to 2,811.84, 4,220.36 and 1,426.19 is: 2,140.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.84 : 4,220.36 = 1,426.19 : x
  2. Step 2: Convert to fraction form
    2,811.84/4,220.36 = 1,426.19/x
  3. Step 3: Cross multiply
    2,811.84x = 4,220.36 × 1,426.19
  4. Step 4: Simplify right side
    2,811.84x = 6,019,007.00
  5. Step 5: Solve for x
    x = 6,019,007.00/2,811.84
  6. Step 6: Final answer
    x = 2,140.59

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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.