Home / 2,812.35-4,221.11-1,426.65

Finding the Fourth Proportional to 2,812.35, 4,221.11 and 1,426.65

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Solution

The fourth proportional to 2,812.35, 4,221.11 and 1,426.65 is: 2,141.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.35 : 4,221.11 = 1,426.65 : x
  2. Step 2: Convert to fraction form
    2,812.35/4,221.11 = 1,426.65/x
  3. Step 3: Cross multiply
    2,812.35x = 4,221.11 × 1,426.65
  4. Step 4: Simplify right side
    2,812.35x = 6,022,039.45
  5. Step 5: Solve for x
    x = 6,022,039.45/2,812.35
  6. Step 6: Final answer
    x = 2,141.28

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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.