Home / 2,190.80-3,283.32-1,038.80

Finding the Fourth Proportional to 2,190.80, 3,283.32 and 1,038.80

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Solution

The fourth proportional to 2,190.80, 3,283.32 and 1,038.80 is: 1,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.80 : 3,283.32 = 1,038.80 : x
  2. Step 2: Convert to fraction form
    2,190.80/3,283.32 = 1,038.80/x
  3. Step 3: Cross multiply
    2,190.80x = 3,283.32 × 1,038.80
  4. Step 4: Simplify right side
    2,190.80x = 3,410,712.82
  5. Step 5: Solve for x
    x = 3,410,712.82/2,190.80
  6. Step 6: Final answer
    x = 1,556.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.