Home / 3,948.90-5,450.40-2,622.66

Finding the Fourth Proportional to 3,948.90, 5,450.40 and 2,622.66

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Solution

The fourth proportional to 3,948.90, 5,450.40 and 2,622.66 is: 3,619.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.90 : 5,450.40 = 2,622.66 : x
  2. Step 2: Convert to fraction form
    3,948.90/5,450.40 = 2,622.66/x
  3. Step 3: Cross multiply
    3,948.90x = 5,450.40 × 2,622.66
  4. Step 4: Simplify right side
    3,948.90x = 14,294,546.06
  5. Step 5: Solve for x
    x = 14,294,546.06/3,948.90
  6. Step 6: Final answer
    x = 3,619.88

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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.