Home / 3,927.08-5,419.41-2,158.65

Finding the Fourth Proportional to 3,927.08, 5,419.41 and 2,158.65

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Solution

The fourth proportional to 3,927.08, 5,419.41 and 2,158.65 is: 2,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.08 : 5,419.41 = 2,158.65 : x
  2. Step 2: Convert to fraction form
    3,927.08/5,419.41 = 2,158.65/x
  3. Step 3: Cross multiply
    3,927.08x = 5,419.41 × 2,158.65
  4. Step 4: Simplify right side
    3,927.08x = 11,698,601.30
  5. Step 5: Solve for x
    x = 11,698,601.30/3,927.08
  6. Step 6: Final answer
    x = 2,978.95

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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.