Home / 8,106.40-12,158.16-2,912.32

Finding the Fourth Proportional to 8,106.40, 12,158.16 and 2,912.32

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Solution

The fourth proportional to 8,106.40, 12,158.16 and 2,912.32 is: 4,367.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.40 : 12,158.16 = 2,912.32 : x
  2. Step 2: Convert to fraction form
    8,106.40/12,158.16 = 2,912.32/x
  3. Step 3: Cross multiply
    8,106.40x = 12,158.16 × 2,912.32
  4. Step 4: Simplify right side
    8,106.40x = 35,408,452.53
  5. Step 5: Solve for x
    x = 35,408,452.53/8,106.40
  6. Step 6: Final answer
    x = 4,367.96

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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.