Home / 3,621.06-5,431.59-2,155.77

Finding the Fourth Proportional to 3,621.06, 5,431.59 and 2,155.77

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Solution

The fourth proportional to 3,621.06, 5,431.59 and 2,155.77 is: 3,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.06 : 5,431.59 = 2,155.77 : x
  2. Step 2: Convert to fraction form
    3,621.06/5,431.59 = 2,155.77/x
  3. Step 3: Cross multiply
    3,621.06x = 5,431.59 × 2,155.77
  4. Step 4: Simplify right side
    3,621.06x = 11,709,258.77
  5. Step 5: Solve for x
    x = 11,709,258.77/3,621.06
  6. Step 6: Final answer
    x = 3,233.66

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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.