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Finding the Fourth Proportional to 8,686.00, 13,028.82 and 2,112.22

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Solution

The fourth proportional to 8,686.00, 13,028.82 and 2,112.22 is: 3,168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.00 : 13,028.82 = 2,112.22 : x
  2. Step 2: Convert to fraction form
    8,686.00/13,028.82 = 2,112.22/x
  3. Step 3: Cross multiply
    8,686.00x = 13,028.82 × 2,112.22
  4. Step 4: Simplify right side
    8,686.00x = 27,519,693.69
  5. Step 5: Solve for x
    x = 27,519,693.69/8,686.00
  6. Step 6: Final answer
    x = 3,168.28

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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.