Home / 1,990.11-2,746.41-1,105.98

Finding the Fourth Proportional to 1,990.11, 2,746.41 and 1,105.98

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Solution

The fourth proportional to 1,990.11, 2,746.41 and 1,105.98 is: 1,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.11 : 2,746.41 = 1,105.98 : x
  2. Step 2: Convert to fraction form
    1,990.11/2,746.41 = 1,105.98/x
  3. Step 3: Cross multiply
    1,990.11x = 2,746.41 × 1,105.98
  4. Step 4: Simplify right side
    1,990.11x = 3,037,474.53
  5. Step 5: Solve for x
    x = 3,037,474.53/1,990.11
  6. Step 6: Final answer
    x = 1,526.28

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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.