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Finding the Fourth Proportional to 3,885.56, 5,361.88 and 2,206.94

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Solution

The fourth proportional to 3,885.56, 5,361.88 and 2,206.94 is: 3,045.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.56 : 5,361.88 = 2,206.94 : x
  2. Step 2: Convert to fraction form
    3,885.56/5,361.88 = 2,206.94/x
  3. Step 3: Cross multiply
    3,885.56x = 5,361.88 × 2,206.94
  4. Step 4: Simplify right side
    3,885.56x = 11,833,347.45
  5. Step 5: Solve for x
    x = 11,833,347.45/3,885.56
  6. Step 6: Final answer
    x = 3,045.47

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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.