Home / 1,930.47-2,663.96-1,223.07

Finding the Fourth Proportional to 1,930.47, 2,663.96 and 1,223.07

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Solution

The fourth proportional to 1,930.47, 2,663.96 and 1,223.07 is: 1,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.47 : 2,663.96 = 1,223.07 : x
  2. Step 2: Convert to fraction form
    1,930.47/2,663.96 = 1,223.07/x
  3. Step 3: Cross multiply
    1,930.47x = 2,663.96 × 1,223.07
  4. Step 4: Simplify right side
    1,930.47x = 3,258,203.44
  5. Step 5: Solve for x
    x = 3,258,203.44/1,930.47
  6. Step 6: Final answer
    x = 1,687.78

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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.