Home / 2,309.88-3,187.58-1,261.96

Finding the Fourth Proportional to 2,309.88, 3,187.58 and 1,261.96

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Solution

The fourth proportional to 2,309.88, 3,187.58 and 1,261.96 is: 1,741.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.88 : 3,187.58 = 1,261.96 : x
  2. Step 2: Convert to fraction form
    2,309.88/3,187.58 = 1,261.96/x
  3. Step 3: Cross multiply
    2,309.88x = 3,187.58 × 1,261.96
  4. Step 4: Simplify right side
    2,309.88x = 4,022,598.46
  5. Step 5: Solve for x
    x = 4,022,598.46/2,309.88
  6. Step 6: Final answer
    x = 1,741.48

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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.