Home / 8,107.80-12,154.35-2,912.46

Finding the Fourth Proportional to 8,107.80, 12,154.35 and 2,912.46

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Solution

The fourth proportional to 8,107.80, 12,154.35 and 2,912.46 is: 4,366.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.80 : 12,154.35 = 2,912.46 : x
  2. Step 2: Convert to fraction form
    8,107.80/12,154.35 = 2,912.46/x
  3. Step 3: Cross multiply
    8,107.80x = 12,154.35 × 2,912.46
  4. Step 4: Simplify right side
    8,107.80x = 35,399,058.20
  5. Step 5: Solve for x
    x = 35,399,058.20/8,107.80
  6. Step 6: Final answer
    x = 4,366.05

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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.