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Finding the Fourth Proportional to 2,874.26, 3,955.08 and 2,788.62

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Solution

The fourth proportional to 2,874.26, 3,955.08 and 2,788.62 is: 3,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.26 : 3,955.08 = 2,788.62 : x
  2. Step 2: Convert to fraction form
    2,874.26/3,955.08 = 2,788.62/x
  3. Step 3: Cross multiply
    2,874.26x = 3,955.08 × 2,788.62
  4. Step 4: Simplify right side
    2,874.26x = 11,029,215.19
  5. Step 5: Solve for x
    x = 11,029,215.19/2,874.26
  6. Step 6: Final answer
    x = 3,837.24

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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.