Home / 3,871.20-5,343.78-2,613

Finding the Fourth Proportional to 3,871.20, 5,343.78 and 2,613

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Solution

The fourth proportional to 3,871.20, 5,343.78 and 2,613 is: 3,606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.20 : 5,343.78 = 2,613 : x
  2. Step 2: Convert to fraction form
    3,871.20/5,343.78 = 2,613/x
  3. Step 3: Cross multiply
    3,871.20x = 5,343.78 × 2,613
  4. Step 4: Simplify right side
    3,871.20x = 13,963,297.14
  5. Step 5: Solve for x
    x = 13,963,297.14/3,871.20
  6. Step 6: Final answer
    x = 3,606.97

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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.