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Finding the Fourth Proportional to 8,786.98, 12,120.06 and 5,248.90

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Solution

The fourth proportional to 8,786.98, 12,120.06 and 5,248.90 is: 7,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.98 : 12,120.06 = 5,248.90 : x
  2. Step 2: Convert to fraction form
    8,786.98/12,120.06 = 5,248.90/x
  3. Step 3: Cross multiply
    8,786.98x = 12,120.06 × 5,248.90
  4. Step 4: Simplify right side
    8,786.98x = 63,616,982.93
  5. Step 5: Solve for x
    x = 63,616,982.93/8,786.98
  6. Step 6: Final answer
    x = 7,239.91

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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.