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Finding the Fourth Proportional to 8,720.53, 13,080.79 and 2,564.53

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Solution

The fourth proportional to 8,720.53, 13,080.79 and 2,564.53 is: 3,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.53 : 13,080.79 = 2,564.53 : x
  2. Step 2: Convert to fraction form
    8,720.53/13,080.79 = 2,564.53/x
  3. Step 3: Cross multiply
    8,720.53x = 13,080.79 × 2,564.53
  4. Step 4: Simplify right side
    8,720.53x = 33,546,048.88
  5. Step 5: Solve for x
    x = 33,546,048.88/8,720.53
  6. Step 6: Final answer
    x = 3,846.79

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1.5x scale

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.