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Finding the Fourth Proportional to 1,986.92, 2,977.42 and 1,360.04

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Solution

The fourth proportional to 1,986.92, 2,977.42 and 1,360.04 is: 2,038.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.92 : 2,977.42 = 1,360.04 : x
  2. Step 2: Convert to fraction form
    1,986.92/2,977.42 = 1,360.04/x
  3. Step 3: Cross multiply
    1,986.92x = 2,977.42 × 1,360.04
  4. Step 4: Simplify right side
    1,986.92x = 4,049,410.30
  5. Step 5: Solve for x
    x = 4,049,410.30/1,986.92
  6. Step 6: Final answer
    x = 2,038.03

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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.