Home / 2,313.09-3,191.81-1,265.15

Finding the Fourth Proportional to 2,313.09, 3,191.81 and 1,265.15

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Solution

The fourth proportional to 2,313.09, 3,191.81 and 1,265.15 is: 1,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.09 : 3,191.81 = 1,265.15 : x
  2. Step 2: Convert to fraction form
    2,313.09/3,191.81 = 1,265.15/x
  3. Step 3: Cross multiply
    2,313.09x = 3,191.81 × 1,265.15
  4. Step 4: Simplify right side
    2,313.09x = 4,038,120.08
  5. Step 5: Solve for x
    x = 4,038,120.08/2,313.09
  6. Step 6: Final answer
    x = 1,745.77

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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.