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Finding the Fourth Proportional to 8,669.92, 11,964 and 4,893.12

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Solution

The fourth proportional to 8,669.92, 11,964 and 4,893.12 is: 6,752.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.92 : 11,964 = 4,893.12 : x
  2. Step 2: Convert to fraction form
    8,669.92/11,964 = 4,893.12/x
  3. Step 3: Cross multiply
    8,669.92x = 11,964 × 4,893.12
  4. Step 4: Simplify right side
    8,669.92x = 58,541,287.68
  5. Step 5: Solve for x
    x = 58,541,287.68/8,669.92
  6. Step 6: Final answer
    x = 6,752.23

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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.