Home / 2,639.68-3,642.71-1,520.61

Finding the Fourth Proportional to 2,639.68, 3,642.71 and 1,520.61

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Solution

The fourth proportional to 2,639.68, 3,642.71 and 1,520.61 is: 2,098.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.68 : 3,642.71 = 1,520.61 : x
  2. Step 2: Convert to fraction form
    2,639.68/3,642.71 = 1,520.61/x
  3. Step 3: Cross multiply
    2,639.68x = 3,642.71 × 1,520.61
  4. Step 4: Simplify right side
    2,639.68x = 5,539,133.65
  5. Step 5: Solve for x
    x = 5,539,133.65/2,639.68
  6. Step 6: Final answer
    x = 2,098.42

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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.