Home / 7,715.91-11,573.81-2,169.22

Finding the Fourth Proportional to 7,715.91, 11,573.81 and 2,169.22

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Solution

The fourth proportional to 7,715.91, 11,573.81 and 2,169.22 is: 3,253.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.91 : 11,573.81 = 2,169.22 : x
  2. Step 2: Convert to fraction form
    7,715.91/11,573.81 = 2,169.22/x
  3. Step 3: Cross multiply
    7,715.91x = 11,573.81 × 2,169.22
  4. Step 4: Simplify right side
    7,715.91x = 25,106,116.62
  5. Step 5: Solve for x
    x = 25,106,116.62/7,715.91
  6. Step 6: Final answer
    x = 3,253.81

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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.