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Finding the Fourth Proportional to 8,653.32, 11,939.49 and 5,815.71

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Solution

The fourth proportional to 8,653.32, 11,939.49 and 5,815.71 is: 8,024.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.32 : 11,939.49 = 5,815.71 : x
  2. Step 2: Convert to fraction form
    8,653.32/11,939.49 = 5,815.71/x
  3. Step 3: Cross multiply
    8,653.32x = 11,939.49 × 5,815.71
  4. Step 4: Simplify right side
    8,653.32x = 69,436,611.39
  5. Step 5: Solve for x
    x = 69,436,611.39/8,653.32
  6. Step 6: Final answer
    x = 8,024.27

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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.