Home / 3,885.14-5,361.34-2,116.76

Finding the Fourth Proportional to 3,885.14, 5,361.34 and 2,116.76

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Solution

The fourth proportional to 3,885.14, 5,361.34 and 2,116.76 is: 2,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.14 : 5,361.34 = 2,116.76 : x
  2. Step 2: Convert to fraction form
    3,885.14/5,361.34 = 2,116.76/x
  3. Step 3: Cross multiply
    3,885.14x = 5,361.34 × 2,116.76
  4. Step 4: Simplify right side
    3,885.14x = 11,348,670.06
  5. Step 5: Solve for x
    x = 11,348,670.06/3,885.14
  6. Step 6: Final answer
    x = 2,921.05

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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.