Home / 3,115.96-4,299.73-1,718.62

Finding the Fourth Proportional to 3,115.96, 4,299.73 and 1,718.62

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Solution

The fourth proportional to 3,115.96, 4,299.73 and 1,718.62 is: 2,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.96 : 4,299.73 = 1,718.62 : x
  2. Step 2: Convert to fraction form
    3,115.96/4,299.73 = 1,718.62/x
  3. Step 3: Cross multiply
    3,115.96x = 4,299.73 × 1,718.62
  4. Step 4: Simplify right side
    3,115.96x = 7,389,615.95
  5. Step 5: Solve for x
    x = 7,389,615.95/3,115.96
  6. Step 6: Final answer
    x = 2,371.54

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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.