Home / 3,691.62-5,095.58-2,120.76

Finding the Fourth Proportional to 3,691.62, 5,095.58 and 2,120.76

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Solution

The fourth proportional to 3,691.62, 5,095.58 and 2,120.76 is: 2,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.62 : 5,095.58 = 2,120.76 : x
  2. Step 2: Convert to fraction form
    3,691.62/5,095.58 = 2,120.76/x
  3. Step 3: Cross multiply
    3,691.62x = 5,095.58 × 2,120.76
  4. Step 4: Simplify right side
    3,691.62x = 10,806,491.64
  5. Step 5: Solve for x
    x = 10,806,491.64/3,691.62
  6. Step 6: Final answer
    x = 2,927.30

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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.