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Finding the Fourth Proportional to 8,855.03, 12,219.97 and 5,318.30

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Solution

The fourth proportional to 8,855.03, 12,219.97 and 5,318.30 is: 7,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.03 : 12,219.97 = 5,318.30 : x
  2. Step 2: Convert to fraction form
    8,855.03/12,219.97 = 5,318.30/x
  3. Step 3: Cross multiply
    8,855.03x = 12,219.97 × 5,318.30
  4. Step 4: Simplify right side
    8,855.03x = 64,989,405.35
  5. Step 5: Solve for x
    x = 64,989,405.35/8,855.03
  6. Step 6: Final answer
    x = 7,339.27

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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.