Home / 3,785.72-5,222.60-2,213.12

Finding the Fourth Proportional to 3,785.72, 5,222.60 and 2,213.12

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Solution

The fourth proportional to 3,785.72, 5,222.60 and 2,213.12 is: 3,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.72 : 5,222.60 = 2,213.12 : x
  2. Step 2: Convert to fraction form
    3,785.72/5,222.60 = 2,213.12/x
  3. Step 3: Cross multiply
    3,785.72x = 5,222.60 × 2,213.12
  4. Step 4: Simplify right side
    3,785.72x = 11,558,240.51
  5. Step 5: Solve for x
    x = 11,558,240.51/3,785.72
  6. Step 6: Final answer
    x = 3,053.12

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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.