Home / 3,906.03-5,390.31-2,113.51

Finding the Fourth Proportional to 3,906.03, 5,390.31 and 2,113.51

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Solution

The fourth proportional to 3,906.03, 5,390.31 and 2,113.51 is: 2,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.03 : 5,390.31 = 2,113.51 : x
  2. Step 2: Convert to fraction form
    3,906.03/5,390.31 = 2,113.51/x
  3. Step 3: Cross multiply
    3,906.03x = 5,390.31 × 2,113.51
  4. Step 4: Simplify right side
    3,906.03x = 11,392,474.09
  5. Step 5: Solve for x
    x = 11,392,474.09/3,906.03
  6. Step 6: Final answer
    x = 2,916.64

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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.