Home / 2,989.73-4,125.78-1,663.43

Finding the Fourth Proportional to 2,989.73, 4,125.78 and 1,663.43

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Solution

The fourth proportional to 2,989.73, 4,125.78 and 1,663.43 is: 2,295.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.73 : 4,125.78 = 1,663.43 : x
  2. Step 2: Convert to fraction form
    2,989.73/4,125.78 = 1,663.43/x
  3. Step 3: Cross multiply
    2,989.73x = 4,125.78 × 1,663.43
  4. Step 4: Simplify right side
    2,989.73x = 6,862,946.23
  5. Step 5: Solve for x
    x = 6,862,946.23/2,989.73
  6. Step 6: Final answer
    x = 2,295.51

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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.