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Finding the Fourth Proportional to 8,939.41, 12,308.15 and 7,873.25

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Solution

The fourth proportional to 8,939.41, 12,308.15 and 7,873.25 is: 10,840.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.41 : 12,308.15 = 7,873.25 : x
  2. Step 2: Convert to fraction form
    8,939.41/12,308.15 = 7,873.25/x
  3. Step 3: Cross multiply
    8,939.41x = 12,308.15 × 7,873.25
  4. Step 4: Simplify right side
    8,939.41x = 96,905,169.36
  5. Step 5: Solve for x
    x = 96,905,169.36/8,939.41
  6. Step 6: Final answer
    x = 10,840.22

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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.