Home / 1,489.49-2,055.42-826.33

Finding the Fourth Proportional to 1,489.49, 2,055.42 and 826.33

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Solution

The fourth proportional to 1,489.49, 2,055.42 and 826.33 is: 1,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.49 : 2,055.42 = 826.33 : x
  2. Step 2: Convert to fraction form
    1,489.49/2,055.42 = 826.33/x
  3. Step 3: Cross multiply
    1,489.49x = 2,055.42 × 826.33
  4. Step 4: Simplify right side
    1,489.49x = 1,698,450.07
  5. Step 5: Solve for x
    x = 1,698,450.07/1,489.49
  6. Step 6: Final answer
    x = 1,140.29

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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.