Home / 7,278.75-10,917.06-3,579.99

Finding the Fourth Proportional to 7,278.75, 10,917.06 and 3,579.99

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Solution

The fourth proportional to 7,278.75, 10,917.06 and 3,579.99 is: 5,369.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.75 : 10,917.06 = 3,579.99 : x
  2. Step 2: Convert to fraction form
    7,278.75/10,917.06 = 3,579.99/x
  3. Step 3: Cross multiply
    7,278.75x = 10,917.06 × 3,579.99
  4. Step 4: Simplify right side
    7,278.75x = 39,082,947.29
  5. Step 5: Solve for x
    x = 39,082,947.29/7,278.75
  6. Step 6: Final answer
    x = 5,369.46

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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.