Home / 1,990.19-2,746.56-1,105.97

Finding the Fourth Proportional to 1,990.19, 2,746.56 and 1,105.97

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Solution

The fourth proportional to 1,990.19, 2,746.56 and 1,105.97 is: 1,526.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.19 : 2,746.56 = 1,105.97 : x
  2. Step 2: Convert to fraction form
    1,990.19/2,746.56 = 1,105.97/x
  3. Step 3: Cross multiply
    1,990.19x = 2,746.56 × 1,105.97
  4. Step 4: Simplify right side
    1,990.19x = 3,037,599.23
  5. Step 5: Solve for x
    x = 3,037,599.23/1,990.19
  6. Step 6: Final answer
    x = 1,526.29

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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.