Home / 7,278.82-10,917.16-3,580.05

Finding the Fourth Proportional to 7,278.82, 10,917.16 and 3,580.05

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Solution

The fourth proportional to 7,278.82, 10,917.16 and 3,580.05 is: 5,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.82 : 10,917.16 = 3,580.05 : x
  2. Step 2: Convert to fraction form
    7,278.82/10,917.16 = 3,580.05/x
  3. Step 3: Cross multiply
    7,278.82x = 10,917.16 × 3,580.05
  4. Step 4: Simplify right side
    7,278.82x = 39,083,969.71
  5. Step 5: Solve for x
    x = 39,083,969.71/7,278.82
  6. Step 6: Final answer
    x = 5,369.55

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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.