Home / 7,715.66-11,571.67-2,169.53

Finding the Fourth Proportional to 7,715.66, 11,571.67 and 2,169.53

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Solution

The fourth proportional to 7,715.66, 11,571.67 and 2,169.53 is: 3,253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.66 : 11,571.67 = 2,169.53 : x
  2. Step 2: Convert to fraction form
    7,715.66/11,571.67 = 2,169.53/x
  3. Step 3: Cross multiply
    7,715.66x = 11,571.67 × 2,169.53
  4. Step 4: Simplify right side
    7,715.66x = 25,105,085.22
  5. Step 5: Solve for x
    x = 25,105,085.22/7,715.66
  6. Step 6: Final answer
    x = 3,253.78

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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.