Home / 3,400.72-5,101.31-1,208.86

Finding the Fourth Proportional to 3,400.72, 5,101.31 and 1,208.86

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Solution

The fourth proportional to 3,400.72, 5,101.31 and 1,208.86 is: 1,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.72 : 5,101.31 = 1,208.86 : x
  2. Step 2: Convert to fraction form
    3,400.72/5,101.31 = 1,208.86/x
  3. Step 3: Cross multiply
    3,400.72x = 5,101.31 × 1,208.86
  4. Step 4: Simplify right side
    3,400.72x = 6,166,769.61
  5. Step 5: Solve for x
    x = 6,166,769.61/3,400.72
  6. Step 6: Final answer
    x = 1,813.37

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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.