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Finding the Fourth Proportional to 8,664.48, 11,954.16 and 5,521.68

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Solution

The fourth proportional to 8,664.48, 11,954.16 and 5,521.68 is: 7,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.48 : 11,954.16 = 5,521.68 : x
  2. Step 2: Convert to fraction form
    8,664.48/11,954.16 = 5,521.68/x
  3. Step 3: Cross multiply
    8,664.48x = 11,954.16 × 5,521.68
  4. Step 4: Simplify right side
    8,664.48x = 66,007,046.19
  5. Step 5: Solve for x
    x = 66,007,046.19/8,664.48
  6. Step 6: Final answer
    x = 7,618.12

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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.