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Finding the Fourth Proportional to 3,689.42, 5,091.54 and 2,010.92

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Solution

The fourth proportional to 3,689.42, 5,091.54 and 2,010.92 is: 2,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.42 : 5,091.54 = 2,010.92 : x
  2. Step 2: Convert to fraction form
    3,689.42/5,091.54 = 2,010.92/x
  3. Step 3: Cross multiply
    3,689.42x = 5,091.54 × 2,010.92
  4. Step 4: Simplify right side
    3,689.42x = 10,238,654.16
  5. Step 5: Solve for x
    x = 10,238,654.16/3,689.42
  6. Step 6: Final answer
    x = 2,775.14

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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.