Home / 2,680.24-4,017.92-1,986.06

Finding the Fourth Proportional to 2,680.24, 4,017.92 and 1,986.06

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Solution

The fourth proportional to 2,680.24, 4,017.92 and 1,986.06 is: 2,977.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.24 : 4,017.92 = 1,986.06 : x
  2. Step 2: Convert to fraction form
    2,680.24/4,017.92 = 1,986.06/x
  3. Step 3: Cross multiply
    2,680.24x = 4,017.92 × 1,986.06
  4. Step 4: Simplify right side
    2,680.24x = 7,979,830.20
  5. Step 5: Solve for x
    x = 7,979,830.20/2,680.24
  6. Step 6: Final answer
    x = 2,977.28

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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.