Home / 3,396.30-4,686.78-1,980.02

Finding the Fourth Proportional to 3,396.30, 4,686.78 and 1,980.02

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Solution

The fourth proportional to 3,396.30, 4,686.78 and 1,980.02 is: 2,732.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.30 : 4,686.78 = 1,980.02 : x
  2. Step 2: Convert to fraction form
    3,396.30/4,686.78 = 1,980.02/x
  3. Step 3: Cross multiply
    3,396.30x = 4,686.78 × 1,980.02
  4. Step 4: Simplify right side
    3,396.30x = 9,279,918.14
  5. Step 5: Solve for x
    x = 9,279,918.14/3,396.30
  6. Step 6: Final answer
    x = 2,732.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.