Home / 2,830.87-3,907.07-1,635.92

Finding the Fourth Proportional to 2,830.87, 3,907.07 and 1,635.92

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Solution

The fourth proportional to 2,830.87, 3,907.07 and 1,635.92 is: 2,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.87 : 3,907.07 = 1,635.92 : x
  2. Step 2: Convert to fraction form
    2,830.87/3,907.07 = 1,635.92/x
  3. Step 3: Cross multiply
    2,830.87x = 3,907.07 × 1,635.92
  4. Step 4: Simplify right side
    2,830.87x = 6,391,653.95
  5. Step 5: Solve for x
    x = 6,391,653.95/2,830.87
  6. Step 6: Final answer
    x = 2,257.84

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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.