Home / 3,108.15-4,289.13-1,781.73

Finding the Fourth Proportional to 3,108.15, 4,289.13 and 1,781.73

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Solution

The fourth proportional to 3,108.15, 4,289.13 and 1,781.73 is: 2,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.15 : 4,289.13 = 1,781.73 : x
  2. Step 2: Convert to fraction form
    3,108.15/4,289.13 = 1,781.73/x
  3. Step 3: Cross multiply
    3,108.15x = 4,289.13 × 1,781.73
  4. Step 4: Simplify right side
    3,108.15x = 7,642,071.59
  5. Step 5: Solve for x
    x = 7,642,071.59/3,108.15
  6. Step 6: Final answer
    x = 2,458.72

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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.