Home / 8,855.53-12,220.66-5,318.80

Finding the Fourth Proportional to 8,855.53, 12,220.66 and 5,318.80

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Solution

The fourth proportional to 8,855.53, 12,220.66 and 5,318.80 is: 7,339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.53 : 12,220.66 = 5,318.80 : x
  2. Step 2: Convert to fraction form
    8,855.53/12,220.66 = 5,318.80/x
  3. Step 3: Cross multiply
    8,855.53x = 12,220.66 × 5,318.80
  4. Step 4: Simplify right side
    8,855.53x = 64,999,246.41
  5. Step 5: Solve for x
    x = 64,999,246.41/8,855.53
  6. Step 6: Final answer
    x = 7,339.96

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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.