Home / 5,315.82-7,335.99-3,078.06

Finding the Fourth Proportional to 5,315.82, 7,335.99 and 3,078.06

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Solution

The fourth proportional to 5,315.82, 7,335.99 and 3,078.06 is: 4,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.82 : 7,335.99 = 3,078.06 : x
  2. Step 2: Convert to fraction form
    5,315.82/7,335.99 = 3,078.06/x
  3. Step 3: Cross multiply
    5,315.82x = 7,335.99 × 3,078.06
  4. Step 4: Simplify right side
    5,315.82x = 22,580,617.38
  5. Step 5: Solve for x
    x = 22,580,617.38/5,315.82
  6. Step 6: Final answer
    x = 4,247.81

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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.