Home / 3,971.26-5,475.30-2,838.28

Finding the Fourth Proportional to 3,971.26, 5,475.30 and 2,838.28

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Solution

The fourth proportional to 3,971.26, 5,475.30 and 2,838.28 is: 3,913.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.26 : 5,475.30 = 2,838.28 : x
  2. Step 2: Convert to fraction form
    3,971.26/5,475.30 = 2,838.28/x
  3. Step 3: Cross multiply
    3,971.26x = 5,475.30 × 2,838.28
  4. Step 4: Simplify right side
    3,971.26x = 15,540,434.48
  5. Step 5: Solve for x
    x = 15,540,434.48/3,971.26
  6. Step 6: Final answer
    x = 3,913.23

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1.5x scale

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.