Home / 3,818.62-5,269.80-2,139.99

Finding the Fourth Proportional to 3,818.62, 5,269.80 and 2,139.99

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Solution

The fourth proportional to 3,818.62, 5,269.80 and 2,139.99 is: 2,953.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.62 : 5,269.80 = 2,139.99 : x
  2. Step 2: Convert to fraction form
    3,818.62/5,269.80 = 2,139.99/x
  3. Step 3: Cross multiply
    3,818.62x = 5,269.80 × 2,139.99
  4. Step 4: Simplify right side
    3,818.62x = 11,277,319.30
  5. Step 5: Solve for x
    x = 11,277,319.30/3,818.62
  6. Step 6: Final answer
    x = 2,953.24

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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.