Home / 3,618.18-5,426.66-1,643.20

Finding the Fourth Proportional to 3,618.18, 5,426.66 and 1,643.20

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Solution

The fourth proportional to 3,618.18, 5,426.66 and 1,643.20 is: 2,464.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.18 : 5,426.66 = 1,643.20 : x
  2. Step 2: Convert to fraction form
    3,618.18/5,426.66 = 1,643.20/x
  3. Step 3: Cross multiply
    3,618.18x = 5,426.66 × 1,643.20
  4. Step 4: Simplify right side
    3,618.18x = 8,917,078.25
  5. Step 5: Solve for x
    x = 8,917,078.25/3,618.18
  6. Step 6: Final answer
    x = 2,464.52

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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.