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Finding the Fourth Proportional to 8,685.02, 11,982.56 and 5,326.22

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Solution

The fourth proportional to 8,685.02, 11,982.56 and 5,326.22 is: 7,348.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.02 : 11,982.56 = 5,326.22 : x
  2. Step 2: Convert to fraction form
    8,685.02/11,982.56 = 5,326.22/x
  3. Step 3: Cross multiply
    8,685.02x = 11,982.56 × 5,326.22
  4. Step 4: Simplify right side
    8,685.02x = 63,821,750.72
  5. Step 5: Solve for x
    x = 63,821,750.72/8,685.02
  6. Step 6: Final answer
    x = 7,348.49

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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.