Home / 2,188.88-3,280.98-1,091.08

Finding the Fourth Proportional to 2,188.88, 3,280.98 and 1,091.08

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Solution

The fourth proportional to 2,188.88, 3,280.98 and 1,091.08 is: 1,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.88 : 3,280.98 = 1,091.08 : x
  2. Step 2: Convert to fraction form
    2,188.88/3,280.98 = 1,091.08/x
  3. Step 3: Cross multiply
    2,188.88x = 3,280.98 × 1,091.08
  4. Step 4: Simplify right side
    2,188.88x = 3,579,811.66
  5. Step 5: Solve for x
    x = 3,579,811.66/2,188.88
  6. Step 6: Final answer
    x = 1,635.45

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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.