Home / 2,808.06-4,212.30-860.28

Finding the Fourth Proportional to 2,808.06, 4,212.30 and 860.28

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Solution

The fourth proportional to 2,808.06, 4,212.30 and 860.28 is: 1,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.06 : 4,212.30 = 860.28 : x
  2. Step 2: Convert to fraction form
    2,808.06/4,212.30 = 860.28/x
  3. Step 3: Cross multiply
    2,808.06x = 4,212.30 × 860.28
  4. Step 4: Simplify right side
    2,808.06x = 3,623,757.44
  5. Step 5: Solve for x
    x = 3,623,757.44/2,808.06
  6. Step 6: Final answer
    x = 1,290.48

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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.