Home / 1,781.37-2,458.23-984.68

Finding the Fourth Proportional to 1,781.37, 2,458.23 and 984.68

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Solution

The fourth proportional to 1,781.37, 2,458.23 and 984.68 is: 1,358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.37 : 2,458.23 = 984.68 : x
  2. Step 2: Convert to fraction form
    1,781.37/2,458.23 = 984.68/x
  3. Step 3: Cross multiply
    1,781.37x = 2,458.23 × 984.68
  4. Step 4: Simplify right side
    1,781.37x = 2,420,568.69
  5. Step 5: Solve for x
    x = 2,420,568.69/1,781.37
  6. Step 6: Final answer
    x = 1,358.82

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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.