Home / 2,318.40-3,478.49-1,394.62

Finding the Fourth Proportional to 2,318.40, 3,478.49 and 1,394.62

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Solution

The fourth proportional to 2,318.40, 3,478.49 and 1,394.62 is: 2,092.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.40 : 3,478.49 = 1,394.62 : x
  2. Step 2: Convert to fraction form
    2,318.40/3,478.49 = 1,394.62/x
  3. Step 3: Cross multiply
    2,318.40x = 3,478.49 × 1,394.62
  4. Step 4: Simplify right side
    2,318.40x = 4,851,171.72
  5. Step 5: Solve for x
    x = 4,851,171.72/2,318.40
  6. Step 6: Final answer
    x = 2,092.47

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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.