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Finding the Fourth Proportional to 8,615.39, 11,892.49 and 6,497.03

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Solution

The fourth proportional to 8,615.39, 11,892.49 and 6,497.03 is: 8,968.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.39 : 11,892.49 = 6,497.03 : x
  2. Step 2: Convert to fraction form
    8,615.39/11,892.49 = 6,497.03/x
  3. Step 3: Cross multiply
    8,615.39x = 11,892.49 × 6,497.03
  4. Step 4: Simplify right side
    8,615.39x = 77,265,877.79
  5. Step 5: Solve for x
    x = 77,265,877.79/8,615.39
  6. Step 6: Final answer
    x = 8,968.36

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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.