Home / 3,430.11-5,146.77-1,785.78

Finding the Fourth Proportional to 3,430.11, 5,146.77 and 1,785.78

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Solution

The fourth proportional to 3,430.11, 5,146.77 and 1,785.78 is: 2,679.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.11 : 5,146.77 = 1,785.78 : x
  2. Step 2: Convert to fraction form
    3,430.11/5,146.77 = 1,785.78/x
  3. Step 3: Cross multiply
    3,430.11x = 5,146.77 × 1,785.78
  4. Step 4: Simplify right side
    3,430.11x = 9,190,998.93
  5. Step 5: Solve for x
    x = 9,190,998.93/3,430.11
  6. Step 6: Final answer
    x = 2,679.51

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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.