Home / 7,919.72-11,882.88-3,475.09

Finding the Fourth Proportional to 7,919.72, 11,882.88 and 3,475.09

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Solution

The fourth proportional to 7,919.72, 11,882.88 and 3,475.09 is: 5,214.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.72 : 11,882.88 = 3,475.09 : x
  2. Step 2: Convert to fraction form
    7,919.72/11,882.88 = 3,475.09/x
  3. Step 3: Cross multiply
    7,919.72x = 11,882.88 × 3,475.09
  4. Step 4: Simplify right side
    7,919.72x = 41,294,075.29
  5. Step 5: Solve for x
    x = 41,294,075.29/7,919.72
  6. Step 6: Final answer
    x = 5,214.08

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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.