Home / 2,230.81-3,076.99-1,299.31

Finding the Fourth Proportional to 2,230.81, 3,076.99 and 1,299.31

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Solution

The fourth proportional to 2,230.81, 3,076.99 and 1,299.31 is: 1,792.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.81 : 3,076.99 = 1,299.31 : x
  2. Step 2: Convert to fraction form
    2,230.81/3,076.99 = 1,299.31/x
  3. Step 3: Cross multiply
    2,230.81x = 3,076.99 × 1,299.31
  4. Step 4: Simplify right side
    2,230.81x = 3,997,963.88
  5. Step 5: Solve for x
    x = 3,997,963.88/2,230.81
  6. Step 6: Final answer
    x = 1,792.16

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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.