Home / 5,515.90-7,611.46-3,278.34

Finding the Fourth Proportional to 5,515.90, 7,611.46 and 3,278.34

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Solution

The fourth proportional to 5,515.90, 7,611.46 and 3,278.34 is: 4,523.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.90 : 7,611.46 = 3,278.34 : x
  2. Step 2: Convert to fraction form
    5,515.90/7,611.46 = 3,278.34/x
  3. Step 3: Cross multiply
    5,515.90x = 7,611.46 × 3,278.34
  4. Step 4: Simplify right side
    5,515.90x = 24,952,945.58
  5. Step 5: Solve for x
    x = 24,952,945.58/5,515.90
  6. Step 6: Final answer
    x = 4,523.82

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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.