Home / 8,172.11-12,250.86-3,783.53

Finding the Fourth Proportional to 8,172.11, 12,250.86 and 3,783.53

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Solution

The fourth proportional to 8,172.11, 12,250.86 and 3,783.53 is: 5,671.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.11 : 12,250.86 = 3,783.53 : x
  2. Step 2: Convert to fraction form
    8,172.11/12,250.86 = 3,783.53/x
  3. Step 3: Cross multiply
    8,172.11x = 12,250.86 × 3,783.53
  4. Step 4: Simplify right side
    8,172.11x = 46,351,435.08
  5. Step 5: Solve for x
    x = 46,351,435.08/8,172.11
  6. Step 6: Final answer
    x = 5,671.91

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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.