Home / 3,428.91-4,733.66-2,171.28

Finding the Fourth Proportional to 3,428.91, 4,733.66 and 2,171.28

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Solution

The fourth proportional to 3,428.91, 4,733.66 and 2,171.28 is: 2,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.91 : 4,733.66 = 2,171.28 : x
  2. Step 2: Convert to fraction form
    3,428.91/4,733.66 = 2,171.28/x
  3. Step 3: Cross multiply
    3,428.91x = 4,733.66 × 2,171.28
  4. Step 4: Simplify right side
    3,428.91x = 10,278,106.71
  5. Step 5: Solve for x
    x = 10,278,106.71/3,428.91
  6. Step 6: Final answer
    x = 2,997.49

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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.