Home / 3,618.55-5,428.22-1,152.80

Finding the Fourth Proportional to 3,618.55, 5,428.22 and 1,152.80

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Solution

The fourth proportional to 3,618.55, 5,428.22 and 1,152.80 is: 1,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.55 : 5,428.22 = 1,152.80 : x
  2. Step 2: Convert to fraction form
    3,618.55/5,428.22 = 1,152.80/x
  3. Step 3: Cross multiply
    3,618.55x = 5,428.22 × 1,152.80
  4. Step 4: Simplify right side
    3,618.55x = 6,257,624.87
  5. Step 5: Solve for x
    x = 6,257,624.87/3,618.55
  6. Step 6: Final answer
    x = 1,729.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.