Home / 3,885.07-5,361.40-2,116.64

Finding the Fourth Proportional to 3,885.07, 5,361.40 and 2,116.64

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Solution

The fourth proportional to 3,885.07, 5,361.40 and 2,116.64 is: 2,920.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.07 : 5,361.40 = 2,116.64 : x
  2. Step 2: Convert to fraction form
    3,885.07/5,361.40 = 2,116.64/x
  3. Step 3: Cross multiply
    3,885.07x = 5,361.40 × 2,116.64
  4. Step 4: Simplify right side
    3,885.07x = 11,348,153.70
  5. Step 5: Solve for x
    x = 11,348,153.70/3,885.07
  6. Step 6: Final answer
    x = 2,920.97

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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.