Home / 3,116.80-4,299.37-1,997.34

Finding the Fourth Proportional to 3,116.80, 4,299.37 and 1,997.34

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Solution

The fourth proportional to 3,116.80, 4,299.37 and 1,997.34 is: 2,755.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.80 : 4,299.37 = 1,997.34 : x
  2. Step 2: Convert to fraction form
    3,116.80/4,299.37 = 1,997.34/x
  3. Step 3: Cross multiply
    3,116.80x = 4,299.37 × 1,997.34
  4. Step 4: Simplify right side
    3,116.80x = 8,587,303.68
  5. Step 5: Solve for x
    x = 8,587,303.68/3,116.80
  6. Step 6: Final answer
    x = 2,755.17

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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.