Home / 1,992.29-2,749.03-1,108.07

Finding the Fourth Proportional to 1,992.29, 2,749.03 and 1,108.07

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Solution

The fourth proportional to 1,992.29, 2,749.03 and 1,108.07 is: 1,528.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.29 : 2,749.03 = 1,108.07 : x
  2. Step 2: Convert to fraction form
    1,992.29/2,749.03 = 1,108.07/x
  3. Step 3: Cross multiply
    1,992.29x = 2,749.03 × 1,108.07
  4. Step 4: Simplify right side
    1,992.29x = 3,046,117.67
  5. Step 5: Solve for x
    x = 3,046,117.67/1,992.29
  6. Step 6: Final answer
    x = 1,528.95

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1.5x scale

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.