Home / 8,121.74-12,168.23-3,729.95

Finding the Fourth Proportional to 8,121.74, 12,168.23 and 3,729.95

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Solution

The fourth proportional to 8,121.74, 12,168.23 and 3,729.95 is: 5,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.74 : 12,168.23 = 3,729.95 : x
  2. Step 2: Convert to fraction form
    8,121.74/12,168.23 = 3,729.95/x
  3. Step 3: Cross multiply
    8,121.74x = 12,168.23 × 3,729.95
  4. Step 4: Simplify right side
    8,121.74x = 45,386,855.63
  5. Step 5: Solve for x
    x = 45,386,855.63/8,121.74
  6. Step 6: Final answer
    x = 5,588.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.