Home / 1,993.08-2,749.62-1,205.76

Finding the Fourth Proportional to 1,993.08, 2,749.62 and 1,205.76

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Solution

The fourth proportional to 1,993.08, 2,749.62 and 1,205.76 is: 1,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.08 : 2,749.62 = 1,205.76 : x
  2. Step 2: Convert to fraction form
    1,993.08/2,749.62 = 1,205.76/x
  3. Step 3: Cross multiply
    1,993.08x = 2,749.62 × 1,205.76
  4. Step 4: Simplify right side
    1,993.08x = 3,315,381.81
  5. Step 5: Solve for x
    x = 3,315,381.81/1,993.08
  6. Step 6: Final answer
    x = 1,663.45

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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.