Home / 3,790.86-5,231.78-2,220.27

Finding the Fourth Proportional to 3,790.86, 5,231.78 and 2,220.27

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Solution

The fourth proportional to 3,790.86, 5,231.78 and 2,220.27 is: 3,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.86 : 5,231.78 = 2,220.27 : x
  2. Step 2: Convert to fraction form
    3,790.86/5,231.78 = 2,220.27/x
  3. Step 3: Cross multiply
    3,790.86x = 5,231.78 × 2,220.27
  4. Step 4: Simplify right side
    3,790.86x = 11,615,964.18
  5. Step 5: Solve for x
    x = 11,615,964.18/3,790.86
  6. Step 6: Final answer
    x = 3,064.20

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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.