Home / 8,104.95-12,157.37-3,171.11

Finding the Fourth Proportional to 8,104.95, 12,157.37 and 3,171.11

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Solution

The fourth proportional to 8,104.95, 12,157.37 and 3,171.11 is: 4,756.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.95 : 12,157.37 = 3,171.11 : x
  2. Step 2: Convert to fraction form
    8,104.95/12,157.37 = 3,171.11/x
  3. Step 3: Cross multiply
    8,104.95x = 12,157.37 × 3,171.11
  4. Step 4: Simplify right side
    8,104.95x = 38,552,280.94
  5. Step 5: Solve for x
    x = 38,552,280.94/8,104.95
  6. Step 6: Final answer
    x = 4,756.63

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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.