Home / 2,170.59-2,991.90-1,383.27

Finding the Fourth Proportional to 2,170.59, 2,991.90 and 1,383.27

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Solution

The fourth proportional to 2,170.59, 2,991.90 and 1,383.27 is: 1,906.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.59 : 2,991.90 = 1,383.27 : x
  2. Step 2: Convert to fraction form
    2,170.59/2,991.90 = 1,383.27/x
  3. Step 3: Cross multiply
    2,170.59x = 2,991.90 × 1,383.27
  4. Step 4: Simplify right side
    2,170.59x = 4,138,605.51
  5. Step 5: Solve for x
    x = 4,138,605.51/2,170.59
  6. Step 6: Final answer
    x = 1,906.67

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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.