Home / 3,117.35-4,300.10-1,997.88

Finding the Fourth Proportional to 3,117.35, 4,300.10 and 1,997.88

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Solution

The fourth proportional to 3,117.35, 4,300.10 and 1,997.88 is: 2,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.35 : 4,300.10 = 1,997.88 : x
  2. Step 2: Convert to fraction form
    3,117.35/4,300.10 = 1,997.88/x
  3. Step 3: Cross multiply
    3,117.35x = 4,300.10 × 1,997.88
  4. Step 4: Simplify right side
    3,117.35x = 8,591,100.59
  5. Step 5: Solve for x
    x = 8,591,100.59/3,117.35
  6. Step 6: Final answer
    x = 2,755.90

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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.