Home / 1,977.89-2,961.70-1,919.50

Finding the Fourth Proportional to 1,977.89, 2,961.70 and 1,919.50

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Solution

The fourth proportional to 1,977.89, 2,961.70 and 1,919.50 is: 2,874.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.89 : 2,961.70 = 1,919.50 : x
  2. Step 2: Convert to fraction form
    1,977.89/2,961.70 = 1,919.50/x
  3. Step 3: Cross multiply
    1,977.89x = 2,961.70 × 1,919.50
  4. Step 4: Simplify right side
    1,977.89x = 5,684,970.95
  5. Step 5: Solve for x
    x = 5,684,970.95/1,977.89
  6. Step 6: Final answer
    x = 2,874.27

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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.