Home / 8,817.67-12,168.77-5,280.21

Finding the Fourth Proportional to 8,817.67, 12,168.77 and 5,280.21

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Solution

The fourth proportional to 8,817.67, 12,168.77 and 5,280.21 is: 7,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.67 : 12,168.77 = 5,280.21 : x
  2. Step 2: Convert to fraction form
    8,817.67/12,168.77 = 5,280.21/x
  3. Step 3: Cross multiply
    8,817.67x = 12,168.77 × 5,280.21
  4. Step 4: Simplify right side
    8,817.67x = 64,253,573.80
  5. Step 5: Solve for x
    x = 64,253,573.80/8,817.67
  6. Step 6: Final answer
    x = 7,286.91

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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.