Home / 4,120.72-5,687.34-2,629.10

Finding the Fourth Proportional to 4,120.72, 5,687.34 and 2,629.10

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Solution

The fourth proportional to 4,120.72, 5,687.34 and 2,629.10 is: 3,628.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.72 : 5,687.34 = 2,629.10 : x
  2. Step 2: Convert to fraction form
    4,120.72/5,687.34 = 2,629.10/x
  3. Step 3: Cross multiply
    4,120.72x = 5,687.34 × 2,629.10
  4. Step 4: Simplify right side
    4,120.72x = 14,952,585.59
  5. Step 5: Solve for x
    x = 14,952,585.59/4,120.72
  6. Step 6: Final answer
    x = 3,628.63

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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.