Home / 2,628.09-3,611.34-2,103.21

Finding the Fourth Proportional to 2,628.09, 3,611.34 and 2,103.21

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Solution

The fourth proportional to 2,628.09, 3,611.34 and 2,103.21 is: 2,890.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.09 : 3,611.34 = 2,103.21 : x
  2. Step 2: Convert to fraction form
    2,628.09/3,611.34 = 2,103.21/x
  3. Step 3: Cross multiply
    2,628.09x = 3,611.34 × 2,103.21
  4. Step 4: Simplify right side
    2,628.09x = 7,595,406.40
  5. Step 5: Solve for x
    x = 7,595,406.40/2,628.09
  6. Step 6: Final answer
    x = 2,890.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.