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Finding the Fourth Proportional to 2,788.66, 3,845.16 and 2,619.16

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Solution

The fourth proportional to 2,788.66, 3,845.16 and 2,619.16 is: 3,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.66 : 3,845.16 = 2,619.16 : x
  2. Step 2: Convert to fraction form
    2,788.66/3,845.16 = 2,619.16/x
  3. Step 3: Cross multiply
    2,788.66x = 3,845.16 × 2,619.16
  4. Step 4: Simplify right side
    2,788.66x = 10,071,089.27
  5. Step 5: Solve for x
    x = 10,071,089.27/2,788.66
  6. Step 6: Final answer
    x = 3,611.44

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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.