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Finding the Fourth Proportional to 8,824.40, 13,241.40 and 3,630.80

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Solution

The fourth proportional to 8,824.40, 13,241.40 and 3,630.80 is: 5,448.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,824.40 : 13,241.40 = 3,630.80 : x
  2. Step 2: Convert to fraction form
    8,824.40/13,241.40 = 3,630.80/x
  3. Step 3: Cross multiply
    8,824.40x = 13,241.40 × 3,630.80
  4. Step 4: Simplify right side
    8,824.40x = 48,076,875.12
  5. Step 5: Solve for x
    x = 48,076,875.12/8,824.40
  6. Step 6: Final answer
    x = 5,448.17

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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.