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Finding the Fourth Proportional to 2,512.51, 3,768.69 and 663.64

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Solution

The fourth proportional to 2,512.51, 3,768.69 and 663.64 is: 995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.51 : 3,768.69 = 663.64 : x
  2. Step 2: Convert to fraction form
    2,512.51/3,768.69 = 663.64/x
  3. Step 3: Cross multiply
    2,512.51x = 3,768.69 × 663.64
  4. Step 4: Simplify right side
    2,512.51x = 2,501,044.01
  5. Step 5: Solve for x
    x = 2,501,044.01/2,512.51
  6. Step 6: Final answer
    x = 995.44

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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.