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Finding the Fourth Proportional to 8,672.48, 11,965.20 and 5,529.68

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Solution

The fourth proportional to 8,672.48, 11,965.20 and 5,529.68 is: 7,629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.48 : 11,965.20 = 5,529.68 : x
  2. Step 2: Convert to fraction form
    8,672.48/11,965.20 = 5,529.68/x
  3. Step 3: Cross multiply
    8,672.48x = 11,965.20 × 5,529.68
  4. Step 4: Simplify right side
    8,672.48x = 66,163,727.14
  5. Step 5: Solve for x
    x = 66,163,727.14/8,672.48
  6. Step 6: Final answer
    x = 7,629.16

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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.