Home / 3,105.20-4,285.17-1,707.95

Finding the Fourth Proportional to 3,105.20, 4,285.17 and 1,707.95

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Solution

The fourth proportional to 3,105.20, 4,285.17 and 1,707.95 is: 2,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.20 : 4,285.17 = 1,707.95 : x
  2. Step 2: Convert to fraction form
    3,105.20/4,285.17 = 1,707.95/x
  3. Step 3: Cross multiply
    3,105.20x = 4,285.17 × 1,707.95
  4. Step 4: Simplify right side
    3,105.20x = 7,318,834.68
  5. Step 5: Solve for x
    x = 7,318,834.68/3,105.20
  6. Step 6: Final answer
    x = 2,356.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.