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Finding the Fourth Proportional to 8,813.73, 13,221.83 and 2,574.20

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Solution

The fourth proportional to 8,813.73, 13,221.83 and 2,574.20 is: 3,861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.73 : 13,221.83 = 2,574.20 : x
  2. Step 2: Convert to fraction form
    8,813.73/13,221.83 = 2,574.20/x
  3. Step 3: Cross multiply
    8,813.73x = 13,221.83 × 2,574.20
  4. Step 4: Simplify right side
    8,813.73x = 34,035,588.86
  5. Step 5: Solve for x
    x = 34,035,588.86/8,813.73
  6. Step 6: Final answer
    x = 3,861.66

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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.