Home / 1,647.21-2,273.20-984.45

Finding the Fourth Proportional to 1,647.21, 2,273.20 and 984.45

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Solution

The fourth proportional to 1,647.21, 2,273.20 and 984.45 is: 1,358.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.21 : 2,273.20 = 984.45 : x
  2. Step 2: Convert to fraction form
    1,647.21/2,273.20 = 984.45/x
  3. Step 3: Cross multiply
    1,647.21x = 2,273.20 × 984.45
  4. Step 4: Simplify right side
    1,647.21x = 2,237,846.82
  5. Step 5: Solve for x
    x = 2,237,846.82/1,647.21
  6. Step 6: Final answer
    x = 1,358.57

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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.