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Finding the Fourth Proportional to 3,229.99, 4,457.29 and 1,813.64

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Solution

The fourth proportional to 3,229.99, 4,457.29 and 1,813.64 is: 2,502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.99 : 4,457.29 = 1,813.64 : x
  2. Step 2: Convert to fraction form
    3,229.99/4,457.29 = 1,813.64/x
  3. Step 3: Cross multiply
    3,229.99x = 4,457.29 × 1,813.64
  4. Step 4: Simplify right side
    3,229.99x = 8,083,919.44
  5. Step 5: Solve for x
    x = 8,083,919.44/3,229.99
  6. Step 6: Final answer
    x = 2,502.77

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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.