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Finding the Fourth Proportional to 8,726, 12,043.32 and 4,999.28

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Solution

The fourth proportional to 8,726, 12,043.32 and 4,999.28 is: 6,899.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726 : 12,043.32 = 4,999.28 : x
  2. Step 2: Convert to fraction form
    8,726/12,043.32 = 4,999.28/x
  3. Step 3: Cross multiply
    8,726x = 12,043.32 × 4,999.28
  4. Step 4: Simplify right side
    8,726x = 60,207,928.81
  5. Step 5: Solve for x
    x = 60,207,928.81/8,726
  6. Step 6: Final answer
    x = 6,899.83

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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.