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Finding the Fourth Proportional to 8,732.97, 13,040.05 and 8,239.64

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Solution

The fourth proportional to 8,732.97, 13,040.05 and 8,239.64 is: 12,303.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,732.97 : 13,040.05 = 8,239.64 : x
  2. Step 2: Convert to fraction form
    8,732.97/13,040.05 = 8,239.64/x
  3. Step 3: Cross multiply
    8,732.97x = 13,040.05 × 8,239.64
  4. Step 4: Simplify right side
    8,732.97x = 107,445,317.58
  5. Step 5: Solve for x
    x = 107,445,317.58/8,732.97
  6. Step 6: Final answer
    x = 12,303.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.