Home / 2,187.27-3,281.26-1,091.67

Finding the Fourth Proportional to 2,187.27, 3,281.26 and 1,091.67

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Solution

The fourth proportional to 2,187.27, 3,281.26 and 1,091.67 is: 1,637.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.27 : 3,281.26 = 1,091.67 : x
  2. Step 2: Convert to fraction form
    2,187.27/3,281.26 = 1,091.67/x
  3. Step 3: Cross multiply
    2,187.27x = 3,281.26 × 1,091.67
  4. Step 4: Simplify right side
    2,187.27x = 3,582,053.10
  5. Step 5: Solve for x
    x = 3,582,053.10/2,187.27
  6. Step 6: Final answer
    x = 1,637.68

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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.