Home / 3,131.76-4,703.40-2,742.96

Finding the Fourth Proportional to 3,131.76, 4,703.40 and 2,742.96

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Solution

The fourth proportional to 3,131.76, 4,703.40 and 2,742.96 is: 4,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.76 : 4,703.40 = 2,742.96 : x
  2. Step 2: Convert to fraction form
    3,131.76/4,703.40 = 2,742.96/x
  3. Step 3: Cross multiply
    3,131.76x = 4,703.40 × 2,742.96
  4. Step 4: Simplify right side
    3,131.76x = 12,901,238.06
  5. Step 5: Solve for x
    x = 12,901,238.06/3,131.76
  6. Step 6: Final answer
    x = 4,119.48

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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.