Home / 3,621.84-5,435.22-1,979.58

Finding the Fourth Proportional to 3,621.84, 5,435.22 and 1,979.58

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Solution

The fourth proportional to 3,621.84, 5,435.22 and 1,979.58 is: 2,970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.84 : 5,435.22 = 1,979.58 : x
  2. Step 2: Convert to fraction form
    3,621.84/5,435.22 = 1,979.58/x
  3. Step 3: Cross multiply
    3,621.84x = 5,435.22 × 1,979.58
  4. Step 4: Simplify right side
    3,621.84x = 10,759,452.81
  5. Step 5: Solve for x
    x = 10,759,452.81/3,621.84
  6. Step 6: Final answer
    x = 2,970.71

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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.