Home / 3,107.07-4,288.37-1,781.66

Finding the Fourth Proportional to 3,107.07, 4,288.37 and 1,781.66

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Solution

The fourth proportional to 3,107.07, 4,288.37 and 1,781.66 is: 2,459.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.07 : 4,288.37 = 1,781.66 : x
  2. Step 2: Convert to fraction form
    3,107.07/4,288.37 = 1,781.66/x
  3. Step 3: Cross multiply
    3,107.07x = 4,288.37 × 1,781.66
  4. Step 4: Simplify right side
    3,107.07x = 7,640,419.11
  5. Step 5: Solve for x
    x = 7,640,419.11/3,107.07
  6. Step 6: Final answer
    x = 2,459.04

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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.