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Finding the Fourth Proportional to 8,813.56, 13,210.26 and 3,613

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Solution

The fourth proportional to 8,813.56, 13,210.26 and 3,613 is: 5,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.56 : 13,210.26 = 3,613 : x
  2. Step 2: Convert to fraction form
    8,813.56/13,210.26 = 3,613/x
  3. Step 3: Cross multiply
    8,813.56x = 13,210.26 × 3,613
  4. Step 4: Simplify right side
    8,813.56x = 47,728,669.38
  5. Step 5: Solve for x
    x = 47,728,669.38/8,813.56
  6. Step 6: Final answer
    x = 5,415.37

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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.