Home / 1,639.26-2,262.09-930.93

Finding the Fourth Proportional to 1,639.26, 2,262.09 and 930.93

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Solution

The fourth proportional to 1,639.26, 2,262.09 and 930.93 is: 1,284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.26 : 2,262.09 = 930.93 : x
  2. Step 2: Convert to fraction form
    1,639.26/2,262.09 = 930.93/x
  3. Step 3: Cross multiply
    1,639.26x = 2,262.09 × 930.93
  4. Step 4: Simplify right side
    1,639.26x = 2,105,847.44
  5. Step 5: Solve for x
    x = 2,105,847.44/1,639.26
  6. Step 6: Final answer
    x = 1,284.63

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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.