Home / 3,639.24-5,455.62-1,690.38

Finding the Fourth Proportional to 3,639.24, 5,455.62 and 1,690.38

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Solution

The fourth proportional to 3,639.24, 5,455.62 and 1,690.38 is: 2,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.24 : 5,455.62 = 1,690.38 : x
  2. Step 2: Convert to fraction form
    3,639.24/5,455.62 = 1,690.38/x
  3. Step 3: Cross multiply
    3,639.24x = 5,455.62 × 1,690.38
  4. Step 4: Simplify right side
    3,639.24x = 9,222,070.94
  5. Step 5: Solve for x
    x = 9,222,070.94/3,639.24
  6. Step 6: Final answer
    x = 2,534.07

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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.