Home / 3,689.39-5,091.29-2,010.81

Finding the Fourth Proportional to 3,689.39, 5,091.29 and 2,010.81

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Solution

The fourth proportional to 3,689.39, 5,091.29 and 2,010.81 is: 2,774.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.39 : 5,091.29 = 2,010.81 : x
  2. Step 2: Convert to fraction form
    3,689.39/5,091.29 = 2,010.81/x
  3. Step 3: Cross multiply
    3,689.39x = 5,091.29 × 2,010.81
  4. Step 4: Simplify right side
    3,689.39x = 10,237,616.84
  5. Step 5: Solve for x
    x = 10,237,616.84/3,689.39
  6. Step 6: Final answer
    x = 2,774.88

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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.