Home / 3,910.15-5,865.29-1,313.11

Finding the Fourth Proportional to 3,910.15, 5,865.29 and 1,313.11

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Solution

The fourth proportional to 3,910.15, 5,865.29 and 1,313.11 is: 1,969.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.15 : 5,865.29 = 1,313.11 : x
  2. Step 2: Convert to fraction form
    3,910.15/5,865.29 = 1,313.11/x
  3. Step 3: Cross multiply
    3,910.15x = 5,865.29 × 1,313.11
  4. Step 4: Simplify right side
    3,910.15x = 7,701,770.95
  5. Step 5: Solve for x
    x = 7,701,770.95/3,910.15
  6. Step 6: Final answer
    x = 1,969.69

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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.