Home / 5,091.90-7,027.32-2,853.78

Finding the Fourth Proportional to 5,091.90, 7,027.32 and 2,853.78

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Solution

The fourth proportional to 5,091.90, 7,027.32 and 2,853.78 is: 3,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.90 : 7,027.32 = 2,853.78 : x
  2. Step 2: Convert to fraction form
    5,091.90/7,027.32 = 2,853.78/x
  3. Step 3: Cross multiply
    5,091.90x = 7,027.32 × 2,853.78
  4. Step 4: Simplify right side
    5,091.90x = 20,054,425.27
  5. Step 5: Solve for x
    x = 20,054,425.27/5,091.90
  6. Step 6: Final answer
    x = 3,938.50

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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.