Home / 1,962.62-2,708.40-1,123.60

Finding the Fourth Proportional to 1,962.62, 2,708.40 and 1,123.60

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Solution

The fourth proportional to 1,962.62, 2,708.40 and 1,123.60 is: 1,550.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.62 : 2,708.40 = 1,123.60 : x
  2. Step 2: Convert to fraction form
    1,962.62/2,708.40 = 1,123.60/x
  3. Step 3: Cross multiply
    1,962.62x = 2,708.40 × 1,123.60
  4. Step 4: Simplify right side
    1,962.62x = 3,043,155.68
  5. Step 5: Solve for x
    x = 3,043,155.68/1,962.62
  6. Step 6: Final answer
    x = 1,550.56

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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.