Home / 3,212.80-4,820.40-1,266.36

Finding the Fourth Proportional to 3,212.80, 4,820.40 and 1,266.36

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Solution

The fourth proportional to 3,212.80, 4,820.40 and 1,266.36 is: 1,900.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.80 : 4,820.40 = 1,266.36 : x
  2. Step 2: Convert to fraction form
    3,212.80/4,820.40 = 1,266.36/x
  3. Step 3: Cross multiply
    3,212.80x = 4,820.40 × 1,266.36
  4. Step 4: Simplify right side
    3,212.80x = 6,104,361.74
  5. Step 5: Solve for x
    x = 6,104,361.74/3,212.80
  6. Step 6: Final answer
    x = 1,900.01

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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.