Home / 3,629.98-5,010.40-2,138.76

Finding the Fourth Proportional to 3,629.98, 5,010.40 and 2,138.76

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Solution

The fourth proportional to 3,629.98, 5,010.40 and 2,138.76 is: 2,952.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.98 : 5,010.40 = 2,138.76 : x
  2. Step 2: Convert to fraction form
    3,629.98/5,010.40 = 2,138.76/x
  3. Step 3: Cross multiply
    3,629.98x = 5,010.40 × 2,138.76
  4. Step 4: Simplify right side
    3,629.98x = 10,716,043.10
  5. Step 5: Solve for x
    x = 10,716,043.10/3,629.98
  6. Step 6: Final answer
    x = 2,952.09

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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.