Home / 2,127.81-3,183.85-1,291.89

Finding the Fourth Proportional to 2,127.81, 3,183.85 and 1,291.89

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Solution

The fourth proportional to 2,127.81, 3,183.85 and 1,291.89 is: 1,933.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.81 : 3,183.85 = 1,291.89 : x
  2. Step 2: Convert to fraction form
    2,127.81/3,183.85 = 1,291.89/x
  3. Step 3: Cross multiply
    2,127.81x = 3,183.85 × 1,291.89
  4. Step 4: Simplify right side
    2,127.81x = 4,113,183.98
  5. Step 5: Solve for x
    x = 4,113,183.98/2,127.81
  6. Step 6: Final answer
    x = 1,933.06

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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.