Home / 8,817.39-12,172.01-5,635.04

Finding the Fourth Proportional to 8,817.39, 12,172.01 and 5,635.04

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Solution

The fourth proportional to 8,817.39, 12,172.01 and 5,635.04 is: 7,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.39 : 12,172.01 = 5,635.04 : x
  2. Step 2: Convert to fraction form
    8,817.39/12,172.01 = 5,635.04/x
  3. Step 3: Cross multiply
    8,817.39x = 12,172.01 × 5,635.04
  4. Step 4: Simplify right side
    8,817.39x = 68,589,674.20
  5. Step 5: Solve for x
    x = 68,589,674.20/8,817.39
  6. Step 6: Final answer
    x = 7,778.91

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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.