Home / 3,679.21-5,077.77-2,107.31

Finding the Fourth Proportional to 3,679.21, 5,077.77 and 2,107.31

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Solution

The fourth proportional to 3,679.21, 5,077.77 and 2,107.31 is: 2,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.21 : 5,077.77 = 2,107.31 : x
  2. Step 2: Convert to fraction form
    3,679.21/5,077.77 = 2,107.31/x
  3. Step 3: Cross multiply
    3,679.21x = 5,077.77 × 2,107.31
  4. Step 4: Simplify right side
    3,679.21x = 10,700,410.11
  5. Step 5: Solve for x
    x = 10,700,410.11/3,679.21
  6. Step 6: Final answer
    x = 2,908.34

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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.