Home / 3,890.42-5,368.94-2,212.24

Finding the Fourth Proportional to 3,890.42, 5,368.94 and 2,212.24

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Solution

The fourth proportional to 3,890.42, 5,368.94 and 2,212.24 is: 3,052.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.42 : 5,368.94 = 2,212.24 : x
  2. Step 2: Convert to fraction form
    3,890.42/5,368.94 = 2,212.24/x
  3. Step 3: Cross multiply
    3,890.42x = 5,368.94 × 2,212.24
  4. Step 4: Simplify right side
    3,890.42x = 11,877,383.83
  5. Step 5: Solve for x
    x = 11,877,383.83/3,890.42
  6. Step 6: Final answer
    x = 3,052.98

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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.