Home / 5,078.31-7,617.75-2,305.19

Finding the Fourth Proportional to 5,078.31, 7,617.75 and 2,305.19

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Solution

The fourth proportional to 5,078.31, 7,617.75 and 2,305.19 is: 3,457.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.31 : 7,617.75 = 2,305.19 : x
  2. Step 2: Convert to fraction form
    5,078.31/7,617.75 = 2,305.19/x
  3. Step 3: Cross multiply
    5,078.31x = 7,617.75 × 2,305.19
  4. Step 4: Simplify right side
    5,078.31x = 17,560,371.52
  5. Step 5: Solve for x
    x = 17,560,371.52/5,078.31
  6. Step 6: Final answer
    x = 3,457.92

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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.