Home / 3,390.29-4,678.46-1,974.02

Finding the Fourth Proportional to 3,390.29, 4,678.46 and 1,974.02

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Solution

The fourth proportional to 3,390.29, 4,678.46 and 1,974.02 is: 2,724.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.29 : 4,678.46 = 1,974.02 : x
  2. Step 2: Convert to fraction form
    3,390.29/4,678.46 = 1,974.02/x
  3. Step 3: Cross multiply
    3,390.29x = 4,678.46 × 1,974.02
  4. Step 4: Simplify right side
    3,390.29x = 9,235,350.22
  5. Step 5: Solve for x
    x = 9,235,350.22/3,390.29
  6. Step 6: Final answer
    x = 2,724.06

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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.