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Finding the Fourth Proportional to 3,224.91, 4,451.29 and 1,899.38

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Solution

The fourth proportional to 3,224.91, 4,451.29 and 1,899.38 is: 2,621.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,224.91 : 4,451.29 = 1,899.38 : x
  2. Step 2: Convert to fraction form
    3,224.91/4,451.29 = 1,899.38/x
  3. Step 3: Cross multiply
    3,224.91x = 4,451.29 × 1,899.38
  4. Step 4: Simplify right side
    3,224.91x = 8,454,702.21
  5. Step 5: Solve for x
    x = 8,454,702.21/3,224.91
  6. Step 6: Final answer
    x = 2,621.69

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Half scale
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Double scale
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Similar ratio
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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.