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Finding the Fourth Proportional to 8,909.43, 13,368.72 and 3,648.33

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Solution

The fourth proportional to 8,909.43, 13,368.72 and 3,648.33 is: 5,474.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.43 : 13,368.72 = 3,648.33 : x
  2. Step 2: Convert to fraction form
    8,909.43/13,368.72 = 3,648.33/x
  3. Step 3: Cross multiply
    8,909.43x = 13,368.72 × 3,648.33
  4. Step 4: Simplify right side
    8,909.43x = 48,773,502.24
  5. Step 5: Solve for x
    x = 48,773,502.24/8,909.43
  6. Step 6: Final answer
    x = 5,474.37

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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.