Home / 2,631.35-3,629.21-1,687.23

Finding the Fourth Proportional to 2,631.35, 3,629.21 and 1,687.23

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Solution

The fourth proportional to 2,631.35, 3,629.21 and 1,687.23 is: 2,327.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.35 : 3,629.21 = 1,687.23 : x
  2. Step 2: Convert to fraction form
    2,631.35/3,629.21 = 1,687.23/x
  3. Step 3: Cross multiply
    2,631.35x = 3,629.21 × 1,687.23
  4. Step 4: Simplify right side
    2,631.35x = 6,123,311.99
  5. Step 5: Solve for x
    x = 6,123,311.99/2,631.35
  6. Step 6: Final answer
    x = 2,327.06

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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.