Home / 1,639.45-2,455.81-1,364.65

Finding the Fourth Proportional to 1,639.45, 2,455.81 and 1,364.65

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Solution

The fourth proportional to 1,639.45, 2,455.81 and 1,364.65 is: 2,044.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.45 : 2,455.81 = 1,364.65 : x
  2. Step 2: Convert to fraction form
    1,639.45/2,455.81 = 1,364.65/x
  3. Step 3: Cross multiply
    1,639.45x = 2,455.81 × 1,364.65
  4. Step 4: Simplify right side
    1,639.45x = 3,351,321.12
  5. Step 5: Solve for x
    x = 3,351,321.12/1,639.45
  6. Step 6: Final answer
    x = 2,044.17

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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.