Home / 3,105.15-4,657.14-1,622.78

Finding the Fourth Proportional to 3,105.15, 4,657.14 and 1,622.78

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Solution

The fourth proportional to 3,105.15, 4,657.14 and 1,622.78 is: 2,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.15 : 4,657.14 = 1,622.78 : x
  2. Step 2: Convert to fraction form
    3,105.15/4,657.14 = 1,622.78/x
  3. Step 3: Cross multiply
    3,105.15x = 4,657.14 × 1,622.78
  4. Step 4: Simplify right side
    3,105.15x = 7,557,490.36
  5. Step 5: Solve for x
    x = 7,557,490.36/3,105.15
  6. Step 6: Final answer
    x = 2,433.86

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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.