Home / 2,187.88-3,280.29-1,091.48

Finding the Fourth Proportional to 2,187.88, 3,280.29 and 1,091.48

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Solution

The fourth proportional to 2,187.88, 3,280.29 and 1,091.48 is: 1,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.88 : 3,280.29 = 1,091.48 : x
  2. Step 2: Convert to fraction form
    2,187.88/3,280.29 = 1,091.48/x
  3. Step 3: Cross multiply
    2,187.88x = 3,280.29 × 1,091.48
  4. Step 4: Simplify right side
    2,187.88x = 3,580,370.93
  5. Step 5: Solve for x
    x = 3,580,370.93/2,187.88
  6. Step 6: Final answer
    x = 1,636.46

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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.