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Finding the Fourth Proportional to 8,118.88, 12,115.48 and 7,244.08

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Solution

The fourth proportional to 8,118.88, 12,115.48 and 7,244.08 is: 10,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.88 : 12,115.48 = 7,244.08 : x
  2. Step 2: Convert to fraction form
    8,118.88/12,115.48 = 7,244.08/x
  3. Step 3: Cross multiply
    8,118.88x = 12,115.48 × 7,244.08
  4. Step 4: Simplify right side
    8,118.88x = 87,765,506.36
  5. Step 5: Solve for x
    x = 87,765,506.36/8,118.88
  6. Step 6: Final answer
    x = 10,810.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.