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Finding the Fourth Proportional to 8,717.92, 12,030.76 and 4,739.03

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Solution

The fourth proportional to 8,717.92, 12,030.76 and 4,739.03 is: 6,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.92 : 12,030.76 = 4,739.03 : x
  2. Step 2: Convert to fraction form
    8,717.92/12,030.76 = 4,739.03/x
  3. Step 3: Cross multiply
    8,717.92x = 12,030.76 × 4,739.03
  4. Step 4: Simplify right side
    8,717.92x = 57,014,198.33
  5. Step 5: Solve for x
    x = 57,014,198.33/8,717.92
  6. Step 6: Final answer
    x = 6,539.88

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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.