Home / 3,653.62-5,042.40-2,161.92

Finding the Fourth Proportional to 3,653.62, 5,042.40 and 2,161.92

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Solution

The fourth proportional to 3,653.62, 5,042.40 and 2,161.92 is: 2,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.62 : 5,042.40 = 2,161.92 : x
  2. Step 2: Convert to fraction form
    3,653.62/5,042.40 = 2,161.92/x
  3. Step 3: Cross multiply
    3,653.62x = 5,042.40 × 2,161.92
  4. Step 4: Simplify right side
    3,653.62x = 10,901,265.41
  5. Step 5: Solve for x
    x = 10,901,265.41/3,653.62
  6. Step 6: Final answer
    x = 2,983.69

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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.