Home / 3,916.40-5,399.88-2,866.64

Finding the Fourth Proportional to 3,916.40, 5,399.88 and 2,866.64

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Solution

The fourth proportional to 3,916.40, 5,399.88 and 2,866.64 is: 3,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.40 : 5,399.88 = 2,866.64 : x
  2. Step 2: Convert to fraction form
    3,916.40/5,399.88 = 2,866.64/x
  3. Step 3: Cross multiply
    3,916.40x = 5,399.88 × 2,866.64
  4. Step 4: Simplify right side
    3,916.40x = 15,479,512.00
  5. Step 5: Solve for x
    x = 15,479,512.00/3,916.40
  6. Step 6: Final answer
    x = 3,952.48

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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.