Home / 1,977.12-2,960.82-1,628.28

Finding the Fourth Proportional to 1,977.12, 2,960.82 and 1,628.28

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Solution

The fourth proportional to 1,977.12, 2,960.82 and 1,628.28 is: 2,438.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.12 : 2,960.82 = 1,628.28 : x
  2. Step 2: Convert to fraction form
    1,977.12/2,960.82 = 1,628.28/x
  3. Step 3: Cross multiply
    1,977.12x = 2,960.82 × 1,628.28
  4. Step 4: Simplify right side
    1,977.12x = 4,821,043.99
  5. Step 5: Solve for x
    x = 4,821,043.99/1,977.12
  6. Step 6: Final answer
    x = 2,438.42

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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.