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Finding the Fourth Proportional to 2,989.01, 4,124.93 and 1,662.68

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Solution

The fourth proportional to 2,989.01, 4,124.93 and 1,662.68 is: 2,294.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.01 : 4,124.93 = 1,662.68 : x
  2. Step 2: Convert to fraction form
    2,989.01/4,124.93 = 1,662.68/x
  3. Step 3: Cross multiply
    2,989.01x = 4,124.93 × 1,662.68
  4. Step 4: Simplify right side
    2,989.01x = 6,858,438.61
  5. Step 5: Solve for x
    x = 6,858,438.61/2,989.01
  6. Step 6: Final answer
    x = 2,294.55

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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.