Home / 1,992.63-2,749.70-1,108.40

Finding the Fourth Proportional to 1,992.63, 2,749.70 and 1,108.40

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Solution

The fourth proportional to 1,992.63, 2,749.70 and 1,108.40 is: 1,529.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.63 : 2,749.70 = 1,108.40 : x
  2. Step 2: Convert to fraction form
    1,992.63/2,749.70 = 1,108.40/x
  3. Step 3: Cross multiply
    1,992.63x = 2,749.70 × 1,108.40
  4. Step 4: Simplify right side
    1,992.63x = 3,047,761.94
  5. Step 5: Solve for x
    x = 3,047,761.94/1,992.63
  6. Step 6: Final answer
    x = 1,529.52

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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.