Home / 2,187.69-3,015.68-1,619.07

Finding the Fourth Proportional to 2,187.69, 3,015.68 and 1,619.07

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Solution

The fourth proportional to 2,187.69, 3,015.68 and 1,619.07 is: 2,231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.69 : 3,015.68 = 1,619.07 : x
  2. Step 2: Convert to fraction form
    2,187.69/3,015.68 = 1,619.07/x
  3. Step 3: Cross multiply
    2,187.69x = 3,015.68 × 1,619.07
  4. Step 4: Simplify right side
    2,187.69x = 4,882,588.92
  5. Step 5: Solve for x
    x = 4,882,588.92/2,187.69
  6. Step 6: Final answer
    x = 2,231.85

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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.