Home / 2,072.98-2,860.48-1,189.07

Finding the Fourth Proportional to 2,072.98, 2,860.48 and 1,189.07

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Solution

The fourth proportional to 2,072.98, 2,860.48 and 1,189.07 is: 1,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.98 : 2,860.48 = 1,189.07 : x
  2. Step 2: Convert to fraction form
    2,072.98/2,860.48 = 1,189.07/x
  3. Step 3: Cross multiply
    2,072.98x = 2,860.48 × 1,189.07
  4. Step 4: Simplify right side
    2,072.98x = 3,401,310.95
  5. Step 5: Solve for x
    x = 3,401,310.95/2,072.98
  6. Step 6: Final answer
    x = 1,640.78

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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.