Home / 3,930.53-5,423.96-2,162.12

Finding the Fourth Proportional to 3,930.53, 5,423.96 and 2,162.12

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Solution

The fourth proportional to 3,930.53, 5,423.96 and 2,162.12 is: 2,983.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.53 : 5,423.96 = 2,162.12 : x
  2. Step 2: Convert to fraction form
    3,930.53/5,423.96 = 2,162.12/x
  3. Step 3: Cross multiply
    3,930.53x = 5,423.96 × 2,162.12
  4. Step 4: Simplify right side
    3,930.53x = 11,727,214.46
  5. Step 5: Solve for x
    x = 11,727,214.46/3,930.53
  6. Step 6: Final answer
    x = 2,983.63

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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.