Home / 3,431.85-5,143.79-1,579.07

Finding the Fourth Proportional to 3,431.85, 5,143.79 and 1,579.07

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Solution

The fourth proportional to 3,431.85, 5,143.79 and 1,579.07 is: 2,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.85 : 5,143.79 = 1,579.07 : x
  2. Step 2: Convert to fraction form
    3,431.85/5,143.79 = 1,579.07/x
  3. Step 3: Cross multiply
    3,431.85x = 5,143.79 × 1,579.07
  4. Step 4: Simplify right side
    3,431.85x = 8,122,404.48
  5. Step 5: Solve for x
    x = 8,122,404.48/3,431.85
  6. Step 6: Final answer
    x = 2,366.77

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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.