Home / 2,769.39-3,823.13-1,889.83

Finding the Fourth Proportional to 2,769.39, 3,823.13 and 1,889.83

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Solution

The fourth proportional to 2,769.39, 3,823.13 and 1,889.83 is: 2,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.39 : 3,823.13 = 1,889.83 : x
  2. Step 2: Convert to fraction form
    2,769.39/3,823.13 = 1,889.83/x
  3. Step 3: Cross multiply
    2,769.39x = 3,823.13 × 1,889.83
  4. Step 4: Simplify right side
    2,769.39x = 7,225,075.27
  5. Step 5: Solve for x
    x = 7,225,075.27/2,769.39
  6. Step 6: Final answer
    x = 2,608.90

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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.