Home / 1,990.50-2,746.97-1,106.43

Finding the Fourth Proportional to 1,990.50, 2,746.97 and 1,106.43

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Solution

The fourth proportional to 1,990.50, 2,746.97 and 1,106.43 is: 1,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.50 : 2,746.97 = 1,106.43 : x
  2. Step 2: Convert to fraction form
    1,990.50/2,746.97 = 1,106.43/x
  3. Step 3: Cross multiply
    1,990.50x = 2,746.97 × 1,106.43
  4. Step 4: Simplify right side
    1,990.50x = 3,039,330.02
  5. Step 5: Solve for x
    x = 3,039,330.02/1,990.50
  6. Step 6: Final answer
    x = 1,526.92

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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.