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Finding the Fourth Proportional to 3,083.63, 4,255.50 and 1,686.38

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Solution

The fourth proportional to 3,083.63, 4,255.50 and 1,686.38 is: 2,327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,083.63 : 4,255.50 = 1,686.38 : x
  2. Step 2: Convert to fraction form
    3,083.63/4,255.50 = 1,686.38/x
  3. Step 3: Cross multiply
    3,083.63x = 4,255.50 × 1,686.38
  4. Step 4: Simplify right side
    3,083.63x = 7,176,375.14
  5. Step 5: Solve for x
    x = 7,176,375.14/3,083.63
  6. Step 6: Final answer
    x = 2,327.25

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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.