Home / 5,091.57-7,638.44-1,581.48

Finding the Fourth Proportional to 5,091.57, 7,638.44 and 1,581.48

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Solution

The fourth proportional to 5,091.57, 7,638.44 and 1,581.48 is: 2,372.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.57 : 7,638.44 = 1,581.48 : x
  2. Step 2: Convert to fraction form
    5,091.57/7,638.44 = 1,581.48/x
  3. Step 3: Cross multiply
    5,091.57x = 7,638.44 × 1,581.48
  4. Step 4: Simplify right side
    5,091.57x = 12,080,032.18
  5. Step 5: Solve for x
    x = 12,080,032.18/5,091.57
  6. Step 6: Final answer
    x = 2,372.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.