Home / 1,321.07-1,982.75-541.49

Finding the Fourth Proportional to 1,321.07, 1,982.75 and 541.49

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Solution

The fourth proportional to 1,321.07, 1,982.75 and 541.49 is: 812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.07 : 1,982.75 = 541.49 : x
  2. Step 2: Convert to fraction form
    1,321.07/1,982.75 = 541.49/x
  3. Step 3: Cross multiply
    1,321.07x = 1,982.75 × 541.49
  4. Step 4: Simplify right side
    1,321.07x = 1,073,626.68
  5. Step 5: Solve for x
    x = 1,073,626.68/1,321.07
  6. Step 6: Final answer
    x = 812.70

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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.