Home / 3,802.35-5,247.19-2,123.78

Finding the Fourth Proportional to 3,802.35, 5,247.19 and 2,123.78

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Solution

The fourth proportional to 3,802.35, 5,247.19 and 2,123.78 is: 2,930.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,802.35 : 5,247.19 = 2,123.78 : x
  2. Step 2: Convert to fraction form
    3,802.35/5,247.19 = 2,123.78/x
  3. Step 3: Cross multiply
    3,802.35x = 5,247.19 × 2,123.78
  4. Step 4: Simplify right side
    3,802.35x = 11,143,890.96
  5. Step 5: Solve for x
    x = 11,143,890.96/3,802.35
  6. Step 6: Final answer
    x = 2,930.79

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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.