Home / 3,800.42-5,244.45-2,121.69

Finding the Fourth Proportional to 3,800.42, 5,244.45 and 2,121.69

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Solution

The fourth proportional to 3,800.42, 5,244.45 and 2,121.69 is: 2,927.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800.42 : 5,244.45 = 2,121.69 : x
  2. Step 2: Convert to fraction form
    3,800.42/5,244.45 = 2,121.69/x
  3. Step 3: Cross multiply
    3,800.42x = 5,244.45 × 2,121.69
  4. Step 4: Simplify right side
    3,800.42x = 11,127,108.83
  5. Step 5: Solve for x
    x = 11,127,108.83/3,800.42
  6. Step 6: Final answer
    x = 2,927.86

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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.