Home / 2,186.15-3,278.55-626.03

Finding the Fourth Proportional to 2,186.15, 3,278.55 and 626.03

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Solution

The fourth proportional to 2,186.15, 3,278.55 and 626.03 is: 938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.15 : 3,278.55 = 626.03 : x
  2. Step 2: Convert to fraction form
    2,186.15/3,278.55 = 626.03/x
  3. Step 3: Cross multiply
    2,186.15x = 3,278.55 × 626.03
  4. Step 4: Simplify right side
    2,186.15x = 2,052,470.66
  5. Step 5: Solve for x
    x = 2,052,470.66/2,186.15
  6. Step 6: Final answer
    x = 938.85

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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.