Home / 3,180.84-4,379.58-2,889.24

Finding the Fourth Proportional to 3,180.84, 4,379.58 and 2,889.24

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Solution

The fourth proportional to 3,180.84, 4,379.58 and 2,889.24 is: 3,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.84 : 4,379.58 = 2,889.24 : x
  2. Step 2: Convert to fraction form
    3,180.84/4,379.58 = 2,889.24/x
  3. Step 3: Cross multiply
    3,180.84x = 4,379.58 × 2,889.24
  4. Step 4: Simplify right side
    3,180.84x = 12,653,657.72
  5. Step 5: Solve for x
    x = 12,653,657.72/3,180.84
  6. Step 6: Final answer
    x = 3,978.09

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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.