Home / 1,471.21-2,208.36-1,081.65

Finding the Fourth Proportional to 1,471.21, 2,208.36 and 1,081.65

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Solution

The fourth proportional to 1,471.21, 2,208.36 and 1,081.65 is: 1,623.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.21 : 2,208.36 = 1,081.65 : x
  2. Step 2: Convert to fraction form
    1,471.21/2,208.36 = 1,081.65/x
  3. Step 3: Cross multiply
    1,471.21x = 2,208.36 × 1,081.65
  4. Step 4: Simplify right side
    1,471.21x = 2,388,675.81
  5. Step 5: Solve for x
    x = 2,388,675.81/1,471.21
  6. Step 6: Final answer
    x = 1,623.61

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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.