Home / 3,108.26-4,288.05-1,781.66

Finding the Fourth Proportional to 3,108.26, 4,288.05 and 1,781.66

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Solution

The fourth proportional to 3,108.26, 4,288.05 and 1,781.66 is: 2,457.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.26 : 4,288.05 = 1,781.66 : x
  2. Step 2: Convert to fraction form
    3,108.26/4,288.05 = 1,781.66/x
  3. Step 3: Cross multiply
    3,108.26x = 4,288.05 × 1,781.66
  4. Step 4: Simplify right side
    3,108.26x = 7,639,847.16
  5. Step 5: Solve for x
    x = 7,639,847.16/3,108.26
  6. Step 6: Final answer
    x = 2,457.92

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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.