Home / 3,400.12-5,100.42-1,423.76

Finding the Fourth Proportional to 3,400.12, 5,100.42 and 1,423.76

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Solution

The fourth proportional to 3,400.12, 5,100.42 and 1,423.76 is: 2,135.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.12 : 5,100.42 = 1,423.76 : x
  2. Step 2: Convert to fraction form
    3,400.12/5,100.42 = 1,423.76/x
  3. Step 3: Cross multiply
    3,400.12x = 5,100.42 × 1,423.76
  4. Step 4: Simplify right side
    3,400.12x = 7,261,773.98
  5. Step 5: Solve for x
    x = 7,261,773.98/3,400.12
  6. Step 6: Final answer
    x = 2,135.74

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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.