Home / 5,515.20-7,611.87-4,028.04

Finding the Fourth Proportional to 5,515.20, 7,611.87 and 4,028.04

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Solution

The fourth proportional to 5,515.20, 7,611.87 and 4,028.04 is: 5,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.20 : 7,611.87 = 4,028.04 : x
  2. Step 2: Convert to fraction form
    5,515.20/7,611.87 = 4,028.04/x
  3. Step 3: Cross multiply
    5,515.20x = 7,611.87 × 4,028.04
  4. Step 4: Simplify right side
    5,515.20x = 30,660,916.83
  5. Step 5: Solve for x
    x = 30,660,916.83/5,515.20
  6. Step 6: Final answer
    x = 5,559.35

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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.