Home / 3,885.08-5,361.47-2,116.68

Finding the Fourth Proportional to 3,885.08, 5,361.47 and 2,116.68

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Solution

The fourth proportional to 3,885.08, 5,361.47 and 2,116.68 is: 2,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.08 : 5,361.47 = 2,116.68 : x
  2. Step 2: Convert to fraction form
    3,885.08/5,361.47 = 2,116.68/x
  3. Step 3: Cross multiply
    3,885.08x = 5,361.47 × 2,116.68
  4. Step 4: Simplify right side
    3,885.08x = 11,348,505.74
  5. Step 5: Solve for x
    x = 11,348,505.74/3,885.08
  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.