Home / 2,309.94-3,187.68-1,261.98

Finding the Fourth Proportional to 2,309.94, 3,187.68 and 1,261.98

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Solution

The fourth proportional to 2,309.94, 3,187.68 and 1,261.98 is: 1,741.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.94 : 3,187.68 = 1,261.98 : x
  2. Step 2: Convert to fraction form
    2,309.94/3,187.68 = 1,261.98/x
  3. Step 3: Cross multiply
    2,309.94x = 3,187.68 × 1,261.98
  4. Step 4: Simplify right side
    2,309.94x = 4,022,788.41
  5. Step 5: Solve for x
    x = 4,022,788.41/2,309.94
  6. Step 6: Final answer
    x = 1,741.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.