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Finding the Fourth Proportional to 8,639.94, 11,924.03 and 5,103.48

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Solution

The fourth proportional to 8,639.94, 11,924.03 and 5,103.48 is: 7,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.94 : 11,924.03 = 5,103.48 : x
  2. Step 2: Convert to fraction form
    8,639.94/11,924.03 = 5,103.48/x
  3. Step 3: Cross multiply
    8,639.94x = 11,924.03 × 5,103.48
  4. Step 4: Simplify right side
    8,639.94x = 60,854,048.62
  5. Step 5: Solve for x
    x = 60,854,048.62/8,639.94
  6. Step 6: Final answer
    x = 7,043.34

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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.