Home / 3,816.24-5,721.12-1,217.76

Finding the Fourth Proportional to 3,816.24, 5,721.12 and 1,217.76

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Solution

The fourth proportional to 3,816.24, 5,721.12 and 1,217.76 is: 1,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.24 : 5,721.12 = 1,217.76 : x
  2. Step 2: Convert to fraction form
    3,816.24/5,721.12 = 1,217.76/x
  3. Step 3: Cross multiply
    3,816.24x = 5,721.12 × 1,217.76
  4. Step 4: Simplify right side
    3,816.24x = 6,966,951.09
  5. Step 5: Solve for x
    x = 6,966,951.09/3,816.24
  6. Step 6: Final answer
    x = 1,825.61

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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.