Home / 2,678.82-3,697.61-1,684.95

Finding the Fourth Proportional to 2,678.82, 3,697.61 and 1,684.95

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Solution

The fourth proportional to 2,678.82, 3,697.61 and 1,684.95 is: 2,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.82 : 3,697.61 = 1,684.95 : x
  2. Step 2: Convert to fraction form
    2,678.82/3,697.61 = 1,684.95/x
  3. Step 3: Cross multiply
    2,678.82x = 3,697.61 × 1,684.95
  4. Step 4: Simplify right side
    2,678.82x = 6,230,279.54
  5. Step 5: Solve for x
    x = 6,230,279.54/2,678.82
  6. Step 6: Final answer
    x = 2,325.76

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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.