Home / 2,920.23-4,380.35-1,939.32

Finding the Fourth Proportional to 2,920.23, 4,380.35 and 1,939.32

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Solution

The fourth proportional to 2,920.23, 4,380.35 and 1,939.32 is: 2,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.23 : 4,380.35 = 1,939.32 : x
  2. Step 2: Convert to fraction form
    2,920.23/4,380.35 = 1,939.32/x
  3. Step 3: Cross multiply
    2,920.23x = 4,380.35 × 1,939.32
  4. Step 4: Simplify right side
    2,920.23x = 8,494,890.67
  5. Step 5: Solve for x
    x = 8,494,890.67/2,920.23
  6. Step 6: Final answer
    x = 2,908.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.