Home / 7,805.12-11,694.68-5,491.76

Finding the Fourth Proportional to 7,805.12, 11,694.68 and 5,491.76

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Solution

The fourth proportional to 7,805.12, 11,694.68 and 5,491.76 is: 8,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.12 : 11,694.68 = 5,491.76 : x
  2. Step 2: Convert to fraction form
    7,805.12/11,694.68 = 5,491.76/x
  3. Step 3: Cross multiply
    7,805.12x = 11,694.68 × 5,491.76
  4. Step 4: Simplify right side
    7,805.12x = 64,224,375.84
  5. Step 5: Solve for x
    x = 64,224,375.84/7,805.12
  6. Step 6: Final answer
    x = 8,228.49

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1.5x scale

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.