Home / 2,185.09-3,278.95-868.60

Finding the Fourth Proportional to 2,185.09, 3,278.95 and 868.60

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Solution

The fourth proportional to 2,185.09, 3,278.95 and 868.60 is: 1,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.09 : 3,278.95 = 868.60 : x
  2. Step 2: Convert to fraction form
    2,185.09/3,278.95 = 868.60/x
  3. Step 3: Cross multiply
    2,185.09x = 3,278.95 × 868.60
  4. Step 4: Simplify right side
    2,185.09x = 2,848,097.90
  5. Step 5: Solve for x
    x = 2,848,097.90/2,185.09
  6. Step 6: Final answer
    x = 1,303.43

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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.