Home / 1,426.85-2,133.25-1,209.90

Finding the Fourth Proportional to 1,426.85, 2,133.25 and 1,209.90

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Solution

The fourth proportional to 1,426.85, 2,133.25 and 1,209.90 is: 1,808.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.85 : 2,133.25 = 1,209.90 : x
  2. Step 2: Convert to fraction form
    1,426.85/2,133.25 = 1,209.90/x
  3. Step 3: Cross multiply
    1,426.85x = 2,133.25 × 1,209.90
  4. Step 4: Simplify right side
    1,426.85x = 2,581,016.85
  5. Step 5: Solve for x
    x = 2,581,016.85/1,426.85
  6. Step 6: Final answer
    x = 1,808.89

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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.