Home / 2,991.38-4,126.68-2,107.67

Finding the Fourth Proportional to 2,991.38, 4,126.68 and 2,107.67

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Solution

The fourth proportional to 2,991.38, 4,126.68 and 2,107.67 is: 2,907.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.38 : 4,126.68 = 2,107.67 : x
  2. Step 2: Convert to fraction form
    2,991.38/4,126.68 = 2,107.67/x
  3. Step 3: Cross multiply
    2,991.38x = 4,126.68 × 2,107.67
  4. Step 4: Simplify right side
    2,991.38x = 8,697,659.00
  5. Step 5: Solve for x
    x = 8,697,659.00/2,991.38
  6. Step 6: Final answer
    x = 2,907.58

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1.5x scale

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.