Home / 2,145.84-2,961.07-1,201.55

Finding the Fourth Proportional to 2,145.84, 2,961.07 and 1,201.55

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Solution

The fourth proportional to 2,145.84, 2,961.07 and 1,201.55 is: 1,658.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.84 : 2,961.07 = 1,201.55 : x
  2. Step 2: Convert to fraction form
    2,145.84/2,961.07 = 1,201.55/x
  3. Step 3: Cross multiply
    2,145.84x = 2,961.07 × 1,201.55
  4. Step 4: Simplify right side
    2,145.84x = 3,557,879.26
  5. Step 5: Solve for x
    x = 3,557,879.26/2,145.84
  6. Step 6: Final answer
    x = 1,658.03

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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.