Home / 1,901.26-2,851.60-668.62

Finding the Fourth Proportional to 1,901.26, 2,851.60 and 668.62

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Solution

The fourth proportional to 1,901.26, 2,851.60 and 668.62 is: 1,002.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.26 : 2,851.60 = 668.62 : x
  2. Step 2: Convert to fraction form
    1,901.26/2,851.60 = 668.62/x
  3. Step 3: Cross multiply
    1,901.26x = 2,851.60 × 668.62
  4. Step 4: Simplify right side
    1,901.26x = 1,906,636.79
  5. Step 5: Solve for x
    x = 1,906,636.79/1,901.26
  6. Step 6: Final answer
    x = 1,002.83

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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.