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Finding the Fourth Proportional to 8,813.81, 13,221.63 and 3,550.64

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Solution

The fourth proportional to 8,813.81, 13,221.63 and 3,550.64 is: 5,326.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.81 : 13,221.63 = 3,550.64 : x
  2. Step 2: Convert to fraction form
    8,813.81/13,221.63 = 3,550.64/x
  3. Step 3: Cross multiply
    8,813.81x = 13,221.63 × 3,550.64
  4. Step 4: Simplify right side
    8,813.81x = 46,945,182.24
  5. Step 5: Solve for x
    x = 46,945,182.24/8,813.81
  6. Step 6: Final answer
    x = 5,326.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.