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Finding the Fourth Proportional to 8,855.91, 13,279.38 and 3,927.06

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Solution

The fourth proportional to 8,855.91, 13,279.38 and 3,927.06 is: 5,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.91 : 13,279.38 = 3,927.06 : x
  2. Step 2: Convert to fraction form
    8,855.91/13,279.38 = 3,927.06/x
  3. Step 3: Cross multiply
    8,855.91x = 13,279.38 × 3,927.06
  4. Step 4: Simplify right side
    8,855.91x = 52,148,922.02
  5. Step 5: Solve for x
    x = 52,148,922.02/8,855.91
  6. Step 6: Final answer
    x = 5,888.60

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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.