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Finding the Fourth Proportional to 8,807.60, 13,213.20 and 2,964.80

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Solution

The fourth proportional to 8,807.60, 13,213.20 and 2,964.80 is: 4,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.60 : 13,213.20 = 2,964.80 : x
  2. Step 2: Convert to fraction form
    8,807.60/13,213.20 = 2,964.80/x
  3. Step 3: Cross multiply
    8,807.60x = 13,213.20 × 2,964.80
  4. Step 4: Simplify right side
    8,807.60x = 39,174,495.36
  5. Step 5: Solve for x
    x = 39,174,495.36/8,807.60
  6. Step 6: Final answer
    x = 4,447.81

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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.