Home / 1,426.12-2,135.77-1,309.26

Finding the Fourth Proportional to 1,426.12, 2,135.77 and 1,309.26

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Solution

The fourth proportional to 1,426.12, 2,135.77 and 1,309.26 is: 1,960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.12 : 2,135.77 = 1,309.26 : x
  2. Step 2: Convert to fraction form
    1,426.12/2,135.77 = 1,309.26/x
  3. Step 3: Cross multiply
    1,426.12x = 2,135.77 × 1,309.26
  4. Step 4: Simplify right side
    1,426.12x = 2,796,282.97
  5. Step 5: Solve for x
    x = 2,796,282.97/1,426.12
  6. Step 6: Final answer
    x = 1,960.76

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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.