Home / 1,838.25-2,756.44-668.20

Finding the Fourth Proportional to 1,838.25, 2,756.44 and 668.20

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Solution

The fourth proportional to 1,838.25, 2,756.44 and 668.20 is: 1,001.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.25 : 2,756.44 = 668.20 : x
  2. Step 2: Convert to fraction form
    1,838.25/2,756.44 = 668.20/x
  3. Step 3: Cross multiply
    1,838.25x = 2,756.44 × 668.20
  4. Step 4: Simplify right side
    1,838.25x = 1,841,853.21
  5. Step 5: Solve for x
    x = 1,841,853.21/1,838.25
  6. Step 6: Final answer
    x = 1,001.96

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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.