Home / 3,205.80-4,809.87-1,259.34

Finding the Fourth Proportional to 3,205.80, 4,809.87 and 1,259.34

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Solution

The fourth proportional to 3,205.80, 4,809.87 and 1,259.34 is: 1,889.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.80 : 4,809.87 = 1,259.34 : x
  2. Step 2: Convert to fraction form
    3,205.80/4,809.87 = 1,259.34/x
  3. Step 3: Cross multiply
    3,205.80x = 4,809.87 × 1,259.34
  4. Step 4: Simplify right side
    3,205.80x = 6,057,261.69
  5. Step 5: Solve for x
    x = 6,057,261.69/3,205.80
  6. Step 6: Final answer
    x = 1,889.47

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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.