Home / 2,309.75-3,187.44-1,261.82

Finding the Fourth Proportional to 2,309.75, 3,187.44 and 1,261.82

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Solution

The fourth proportional to 2,309.75, 3,187.44 and 1,261.82 is: 1,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.75 : 3,187.44 = 1,261.82 : x
  2. Step 2: Convert to fraction form
    2,309.75/3,187.44 = 1,261.82/x
  3. Step 3: Cross multiply
    2,309.75x = 3,187.44 × 1,261.82
  4. Step 4: Simplify right side
    2,309.75x = 4,021,959.60
  5. Step 5: Solve for x
    x = 4,021,959.60/2,309.75
  6. Step 6: Final answer
    x = 1,741.30

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1.5x scale

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.