Home / 1,619.89-2,428.79-889.27

Finding the Fourth Proportional to 1,619.89, 2,428.79 and 889.27

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Solution

The fourth proportional to 1,619.89, 2,428.79 and 889.27 is: 1,333.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.89 : 2,428.79 = 889.27 : x
  2. Step 2: Convert to fraction form
    1,619.89/2,428.79 = 889.27/x
  3. Step 3: Cross multiply
    1,619.89x = 2,428.79 × 889.27
  4. Step 4: Simplify right side
    1,619.89x = 2,159,839.56
  5. Step 5: Solve for x
    x = 2,159,839.56/1,619.89
  6. Step 6: Final answer
    x = 1,333.33

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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.