Home / 3,894.89-5,374.72-2,126.14

Finding the Fourth Proportional to 3,894.89, 5,374.72 and 2,126.14

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Solution

The fourth proportional to 3,894.89, 5,374.72 and 2,126.14 is: 2,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.89 : 5,374.72 = 2,126.14 : x
  2. Step 2: Convert to fraction form
    3,894.89/5,374.72 = 2,126.14/x
  3. Step 3: Cross multiply
    3,894.89x = 5,374.72 × 2,126.14
  4. Step 4: Simplify right side
    3,894.89x = 11,427,407.18
  5. Step 5: Solve for x
    x = 11,427,407.18/3,894.89
  6. Step 6: Final answer
    x = 2,933.95

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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.