Home / 1,991.95-2,984.76-1,682.35

Finding the Fourth Proportional to 1,991.95, 2,984.76 and 1,682.35

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Solution

The fourth proportional to 1,991.95, 2,984.76 and 1,682.35 is: 2,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.95 : 2,984.76 = 1,682.35 : x
  2. Step 2: Convert to fraction form
    1,991.95/2,984.76 = 1,682.35/x
  3. Step 3: Cross multiply
    1,991.95x = 2,984.76 × 1,682.35
  4. Step 4: Simplify right side
    1,991.95x = 5,021,410.99
  5. Step 5: Solve for x
    x = 5,021,410.99/1,991.95
  6. Step 6: Final answer
    x = 2,520.85

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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.