Home / 3,874.57-5,346.95-2,106.20

Finding the Fourth Proportional to 3,874.57, 5,346.95 and 2,106.20

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Solution

The fourth proportional to 3,874.57, 5,346.95 and 2,106.20 is: 2,906.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.57 : 5,346.95 = 2,106.20 : x
  2. Step 2: Convert to fraction form
    3,874.57/5,346.95 = 2,106.20/x
  3. Step 3: Cross multiply
    3,874.57x = 5,346.95 × 2,106.20
  4. Step 4: Simplify right side
    3,874.57x = 11,261,748.93
  5. Step 5: Solve for x
    x = 11,261,748.93/3,874.57
  6. Step 6: Final answer
    x = 2,906.58

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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.