Home / 8,855.28-12,220.32-5,318.55

Finding the Fourth Proportional to 8,855.28, 12,220.32 and 5,318.55

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Solution

The fourth proportional to 8,855.28, 12,220.32 and 5,318.55 is: 7,339.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.28 : 12,220.32 = 5,318.55 : x
  2. Step 2: Convert to fraction form
    8,855.28/12,220.32 = 5,318.55/x
  3. Step 3: Cross multiply
    8,855.28x = 12,220.32 × 5,318.55
  4. Step 4: Simplify right side
    8,855.28x = 64,994,382.94
  5. Step 5: Solve for x
    x = 64,994,382.94/8,855.28
  6. Step 6: Final answer
    x = 7,339.62

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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.