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Finding the Fourth Proportional to 2,808.63, 4,212.99 and 1,512.63

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Solution

The fourth proportional to 2,808.63, 4,212.99 and 1,512.63 is: 2,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.63 : 4,212.99 = 1,512.63 : x
  2. Step 2: Convert to fraction form
    2,808.63/4,212.99 = 1,512.63/x
  3. Step 3: Cross multiply
    2,808.63x = 4,212.99 × 1,512.63
  4. Step 4: Simplify right side
    2,808.63x = 6,372,695.06
  5. Step 5: Solve for x
    x = 6,372,695.06/2,808.63
  6. Step 6: Final answer
    x = 2,268.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.