Home / 3,679.09-5,077.16-2,107.20

Finding the Fourth Proportional to 3,679.09, 5,077.16 and 2,107.20

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Solution

The fourth proportional to 3,679.09, 5,077.16 and 2,107.20 is: 2,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.09 : 5,077.16 = 2,107.20 : x
  2. Step 2: Convert to fraction form
    3,679.09/5,077.16 = 2,107.20/x
  3. Step 3: Cross multiply
    3,679.09x = 5,077.16 × 2,107.20
  4. Step 4: Simplify right side
    3,679.09x = 10,698,591.55
  5. Step 5: Solve for x
    x = 10,698,591.55/3,679.09
  6. Step 6: Final answer
    x = 2,907.95

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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.