Home / 1,217.02-1,680.28-936.73

Finding the Fourth Proportional to 1,217.02, 1,680.28 and 936.73

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Solution

The fourth proportional to 1,217.02, 1,680.28 and 936.73 is: 1,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.02 : 1,680.28 = 936.73 : x
  2. Step 2: Convert to fraction form
    1,217.02/1,680.28 = 936.73/x
  3. Step 3: Cross multiply
    1,217.02x = 1,680.28 × 936.73
  4. Step 4: Simplify right side
    1,217.02x = 1,573,968.68
  5. Step 5: Solve for x
    x = 1,573,968.68/1,217.02
  6. Step 6: Final answer
    x = 1,293.30

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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.