Home / 3,583.70-4,945.00-1,990.22

Finding the Fourth Proportional to 3,583.70, 4,945.00 and 1,990.22

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Solution

The fourth proportional to 3,583.70, 4,945.00 and 1,990.22 is: 2,746.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,583.70 : 4,945.00 = 1,990.22 : x
  2. Step 2: Convert to fraction form
    3,583.70/4,945.00 = 1,990.22/x
  3. Step 3: Cross multiply
    3,583.70x = 4,945.00 × 1,990.22
  4. Step 4: Simplify right side
    3,583.70x = 9,841,627.95
  5. Step 5: Solve for x
    x = 9,841,627.95/3,583.70
  6. Step 6: Final answer
    x = 2,746.22

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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.