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Finding the Fourth Proportional to 8,720.52, 13,080.80 and 2,564.52

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Solution

The fourth proportional to 8,720.52, 13,080.80 and 2,564.52 is: 3,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.52 : 13,080.80 = 2,564.52 : x
  2. Step 2: Convert to fraction form
    8,720.52/13,080.80 = 2,564.52/x
  3. Step 3: Cross multiply
    8,720.52x = 13,080.80 × 2,564.52
  4. Step 4: Simplify right side
    8,720.52x = 33,545,973.22
  5. Step 5: Solve for x
    x = 33,545,973.22/8,720.52
  6. Step 6: Final answer
    x = 3,846.79

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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.