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Finding the Fourth Proportional to 8,678.92, 13,007.52 and 3,993.92

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Solution

The fourth proportional to 8,678.92, 13,007.52 and 3,993.92 is: 5,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.92 : 13,007.52 = 3,993.92 : x
  2. Step 2: Convert to fraction form
    8,678.92/13,007.52 = 3,993.92/x
  3. Step 3: Cross multiply
    8,678.92x = 13,007.52 × 3,993.92
  4. Step 4: Simplify right side
    8,678.92x = 51,950,994.28
  5. Step 5: Solve for x
    x = 51,950,994.28/8,678.92
  6. Step 6: Final answer
    x = 5,985.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.