Home / 3,086.34-4,257.56-2,091.28

Finding the Fourth Proportional to 3,086.34, 4,257.56 and 2,091.28

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Solution

The fourth proportional to 3,086.34, 4,257.56 and 2,091.28 is: 2,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.34 : 4,257.56 = 2,091.28 : x
  2. Step 2: Convert to fraction form
    3,086.34/4,257.56 = 2,091.28/x
  3. Step 3: Cross multiply
    3,086.34x = 4,257.56 × 2,091.28
  4. Step 4: Simplify right side
    3,086.34x = 8,903,750.08
  5. Step 5: Solve for x
    x = 8,903,750.08/3,086.34
  6. Step 6: Final answer
    x = 2,884.89

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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.