Home / 3,392.14-4,678.56-2,920.85

Finding the Fourth Proportional to 3,392.14, 4,678.56 and 2,920.85

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Solution

The fourth proportional to 3,392.14, 4,678.56 and 2,920.85 is: 4,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.14 : 4,678.56 = 2,920.85 : x
  2. Step 2: Convert to fraction form
    3,392.14/4,678.56 = 2,920.85/x
  3. Step 3: Cross multiply
    3,392.14x = 4,678.56 × 2,920.85
  4. Step 4: Simplify right side
    3,392.14x = 13,665,357.37
  5. Step 5: Solve for x
    x = 13,665,357.37/3,392.14
  6. Step 6: Final answer
    x = 4,028.54

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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.