Home / 2,628.75-3,940.99-1,069.49

Finding the Fourth Proportional to 2,628.75, 3,940.99 and 1,069.49

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Solution

The fourth proportional to 2,628.75, 3,940.99 and 1,069.49 is: 1,603.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.75 : 3,940.99 = 1,069.49 : x
  2. Step 2: Convert to fraction form
    2,628.75/3,940.99 = 1,069.49/x
  3. Step 3: Cross multiply
    2,628.75x = 3,940.99 × 1,069.49
  4. Step 4: Simplify right side
    2,628.75x = 4,214,827.02
  5. Step 5: Solve for x
    x = 4,214,827.02/2,628.75
  6. Step 6: Final answer
    x = 1,603.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.