Home / 2,898.11-3,996.64-2,106.64

Finding the Fourth Proportional to 2,898.11, 3,996.64 and 2,106.64

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Solution

The fourth proportional to 2,898.11, 3,996.64 and 2,106.64 is: 2,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.11 : 3,996.64 = 2,106.64 : x
  2. Step 2: Convert to fraction form
    2,898.11/3,996.64 = 2,106.64/x
  3. Step 3: Cross multiply
    2,898.11x = 3,996.64 × 2,106.64
  4. Step 4: Simplify right side
    2,898.11x = 8,419,489.32
  5. Step 5: Solve for x
    x = 8,419,489.32/2,898.11
  6. Step 6: Final answer
    x = 2,905.16

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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.