Home / 1,639.95-2,455.10-1,083.65

Finding the Fourth Proportional to 1,639.95, 2,455.10 and 1,083.65

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Solution

The fourth proportional to 1,639.95, 2,455.10 and 1,083.65 is: 1,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.95 : 2,455.10 = 1,083.65 : x
  2. Step 2: Convert to fraction form
    1,639.95/2,455.10 = 1,083.65/x
  3. Step 3: Cross multiply
    1,639.95x = 2,455.10 × 1,083.65
  4. Step 4: Simplify right side
    1,639.95x = 2,660,451.42
  5. Step 5: Solve for x
    x = 2,660,451.42/1,639.95
  6. Step 6: Final answer
    x = 1,622.28

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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.