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Finding the Fourth Proportional to 2,988.92, 4,124.73 and 1,662.68

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Solution

The fourth proportional to 2,988.92, 4,124.73 and 1,662.68 is: 2,294.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.92 : 4,124.73 = 1,662.68 : x
  2. Step 2: Convert to fraction form
    2,988.92/4,124.73 = 1,662.68/x
  3. Step 3: Cross multiply
    2,988.92x = 4,124.73 × 1,662.68
  4. Step 4: Simplify right side
    2,988.92x = 6,858,106.08
  5. Step 5: Solve for x
    x = 6,858,106.08/2,988.92
  6. Step 6: Final answer
    x = 2,294.51

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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.