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Finding the Fourth Proportional to 3,406.46, 4,701.02 and 1,989.92

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Solution

The fourth proportional to 3,406.46, 4,701.02 and 1,989.92 is: 2,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.46 : 4,701.02 = 1,989.92 : x
  2. Step 2: Convert to fraction form
    3,406.46/4,701.02 = 1,989.92/x
  3. Step 3: Cross multiply
    3,406.46x = 4,701.02 × 1,989.92
  4. Step 4: Simplify right side
    3,406.46x = 9,354,620.26
  5. Step 5: Solve for x
    x = 9,354,620.26/3,406.46
  6. Step 6: Final answer
    x = 2,746.15

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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.