Home / 3,318.04-4,578.96-1,921.60

Finding the Fourth Proportional to 3,318.04, 4,578.96 and 1,921.60

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Solution

The fourth proportional to 3,318.04, 4,578.96 and 1,921.60 is: 2,651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.04 : 4,578.96 = 1,921.60 : x
  2. Step 2: Convert to fraction form
    3,318.04/4,578.96 = 1,921.60/x
  3. Step 3: Cross multiply
    3,318.04x = 4,578.96 × 1,921.60
  4. Step 4: Simplify right side
    3,318.04x = 8,798,929.54
  5. Step 5: Solve for x
    x = 8,798,929.54/3,318.04
  6. Step 6: Final answer
    x = 2,651.85

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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.