Home / 1,107.30-1,652.38-984.60

Finding the Fourth Proportional to 1,107.30, 1,652.38 and 984.60

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Solution

The fourth proportional to 1,107.30, 1,652.38 and 984.60 is: 1,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.30 : 1,652.38 = 984.60 : x
  2. Step 2: Convert to fraction form
    1,107.30/1,652.38 = 984.60/x
  3. Step 3: Cross multiply
    1,107.30x = 1,652.38 × 984.60
  4. Step 4: Simplify right side
    1,107.30x = 1,626,933.35
  5. Step 5: Solve for x
    x = 1,626,933.35/1,107.30
  6. Step 6: Final answer
    x = 1,469.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.