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Finding the Fourth Proportional to 8,805.61, 13,211.46 and 5,514.79

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Solution

The fourth proportional to 8,805.61, 13,211.46 and 5,514.79 is: 8,274.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.61 : 13,211.46 = 5,514.79 : x
  2. Step 2: Convert to fraction form
    8,805.61/13,211.46 = 5,514.79/x
  3. Step 3: Cross multiply
    8,805.61x = 13,211.46 × 5,514.79
  4. Step 4: Simplify right side
    8,805.61x = 72,858,427.49
  5. Step 5: Solve for x
    x = 72,858,427.49/8,805.61
  6. Step 6: Final answer
    x = 8,274.09

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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.