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Finding the Fourth Proportional to 8,672.21, 11,972.81 and 5,693.26

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Solution

The fourth proportional to 8,672.21, 11,972.81 and 5,693.26 is: 7,860.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.21 : 11,972.81 = 5,693.26 : x
  2. Step 2: Convert to fraction form
    8,672.21/11,972.81 = 5,693.26/x
  3. Step 3: Cross multiply
    8,672.21x = 11,972.81 × 5,693.26
  4. Step 4: Simplify right side
    8,672.21x = 68,164,231.93
  5. Step 5: Solve for x
    x = 68,164,231.93/8,672.21
  6. Step 6: Final answer
    x = 7,860.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.