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Finding the Fourth Proportional to 3,863.06, 5,328.30 and 3,734.47

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Solution

The fourth proportional to 3,863.06, 5,328.30 and 3,734.47 is: 5,150.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.06 : 5,328.30 = 3,734.47 : x
  2. Step 2: Convert to fraction form
    3,863.06/5,328.30 = 3,734.47/x
  3. Step 3: Cross multiply
    3,863.06x = 5,328.30 × 3,734.47
  4. Step 4: Simplify right side
    3,863.06x = 19,898,367.19
  5. Step 5: Solve for x
    x = 19,898,367.19/3,863.06
  6. Step 6: Final answer
    x = 5,150.93

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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.