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Finding the Fourth Proportional to 8,529.69, 11,772.91 and 5,540.32

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Solution

The fourth proportional to 8,529.69, 11,772.91 and 5,540.32 is: 7,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,529.69 : 11,772.91 = 5,540.32 : x
  2. Step 2: Convert to fraction form
    8,529.69/11,772.91 = 5,540.32/x
  3. Step 3: Cross multiply
    8,529.69x = 11,772.91 × 5,540.32
  4. Step 4: Simplify right side
    8,529.69x = 65,225,688.73
  5. Step 5: Solve for x
    x = 65,225,688.73/8,529.69
  6. Step 6: Final answer
    x = 7,646.90

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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.