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Finding the Fourth Proportional to 2,886.46, 3,981.27 and 2,843.26

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Solution

The fourth proportional to 2,886.46, 3,981.27 and 2,843.26 is: 3,921.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.46 : 3,981.27 = 2,843.26 : x
  2. Step 2: Convert to fraction form
    2,886.46/3,981.27 = 2,843.26/x
  3. Step 3: Cross multiply
    2,886.46x = 3,981.27 × 2,843.26
  4. Step 4: Simplify right side
    2,886.46x = 11,319,785.74
  5. Step 5: Solve for x
    x = 11,319,785.74/2,886.46
  6. Step 6: Final answer
    x = 3,921.68

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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.