Home / 3,800.24-5,244.16-2,121.72

Finding the Fourth Proportional to 3,800.24, 5,244.16 and 2,121.72

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Solution

The fourth proportional to 3,800.24, 5,244.16 and 2,121.72 is: 2,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800.24 : 5,244.16 = 2,121.72 : x
  2. Step 2: Convert to fraction form
    3,800.24/5,244.16 = 2,121.72/x
  3. Step 3: Cross multiply
    3,800.24x = 5,244.16 × 2,121.72
  4. Step 4: Simplify right side
    3,800.24x = 11,126,639.16
  5. Step 5: Solve for x
    x = 11,126,639.16/3,800.24
  6. Step 6: Final answer
    x = 2,927.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.