Home / 1,990.73-2,746.43-1,151.28

Finding the Fourth Proportional to 1,990.73, 2,746.43 and 1,151.28

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Solution

The fourth proportional to 1,990.73, 2,746.43 and 1,151.28 is: 1,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.73 : 2,746.43 = 1,151.28 : x
  2. Step 2: Convert to fraction form
    1,990.73/2,746.43 = 1,151.28/x
  3. Step 3: Cross multiply
    1,990.73x = 2,746.43 × 1,151.28
  4. Step 4: Simplify right side
    1,990.73x = 3,161,909.93
  5. Step 5: Solve for x
    x = 3,161,909.93/1,990.73
  6. Step 6: Final answer
    x = 1,588.32

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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.