Home / 1,660.39-2,485.25-1,103.81

Finding the Fourth Proportional to 1,660.39, 2,485.25 and 1,103.81

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Solution

The fourth proportional to 1,660.39, 2,485.25 and 1,103.81 is: 1,652.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.39 : 2,485.25 = 1,103.81 : x
  2. Step 2: Convert to fraction form
    1,660.39/2,485.25 = 1,103.81/x
  3. Step 3: Cross multiply
    1,660.39x = 2,485.25 × 1,103.81
  4. Step 4: Simplify right side
    1,660.39x = 2,743,243.80
  5. Step 5: Solve for x
    x = 2,743,243.80/1,660.39
  6. Step 6: Final answer
    x = 1,652.17

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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.