Home / 3,621.39-5,431.28-1,155.75

Finding the Fourth Proportional to 3,621.39, 5,431.28 and 1,155.75

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Solution

The fourth proportional to 3,621.39, 5,431.28 and 1,155.75 is: 1,733.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.39 : 5,431.28 = 1,155.75 : x
  2. Step 2: Convert to fraction form
    3,621.39/5,431.28 = 1,155.75/x
  3. Step 3: Cross multiply
    3,621.39x = 5,431.28 × 1,155.75
  4. Step 4: Simplify right side
    3,621.39x = 6,277,196.08
  5. Step 5: Solve for x
    x = 6,277,196.08/3,621.39
  6. Step 6: Final answer
    x = 1,733.37

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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.