Home / 2,989.09-4,124.92-1,662.79

Finding the Fourth Proportional to 2,989.09, 4,124.92 and 1,662.79

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Solution

The fourth proportional to 2,989.09, 4,124.92 and 1,662.79 is: 2,294.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.09 : 4,124.92 = 1,662.79 : x
  2. Step 2: Convert to fraction form
    2,989.09/4,124.92 = 1,662.79/x
  3. Step 3: Cross multiply
    2,989.09x = 4,124.92 × 1,662.79
  4. Step 4: Simplify right side
    2,989.09x = 6,858,875.73
  5. Step 5: Solve for x
    x = 6,858,875.73/2,989.09
  6. Step 6: Final answer
    x = 2,294.64

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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.