Home / 3,105.07-4,284.99-1,707.82

Finding the Fourth Proportional to 3,105.07, 4,284.99 and 1,707.82

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Solution

The fourth proportional to 3,105.07, 4,284.99 and 1,707.82 is: 2,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.07 : 4,284.99 = 1,707.82 : x
  2. Step 2: Convert to fraction form
    3,105.07/4,284.99 = 1,707.82/x
  3. Step 3: Cross multiply
    3,105.07x = 4,284.99 × 1,707.82
  4. Step 4: Simplify right side
    3,105.07x = 7,317,961.66
  5. Step 5: Solve for x
    x = 7,317,961.66/3,105.07
  6. Step 6: Final answer
    x = 2,356.78

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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.