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Finding the Fourth Proportional to 2,638.62, 3,636.13 and 2,383.77

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Solution

The fourth proportional to 2,638.62, 3,636.13 and 2,383.77 is: 3,284.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.62 : 3,636.13 = 2,383.77 : x
  2. Step 2: Convert to fraction form
    2,638.62/3,636.13 = 2,383.77/x
  3. Step 3: Cross multiply
    2,638.62x = 3,636.13 × 2,383.77
  4. Step 4: Simplify right side
    2,638.62x = 8,667,667.51
  5. Step 5: Solve for x
    x = 8,667,667.51/2,638.62
  6. Step 6: Final answer
    x = 3,284.93

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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.