Home / 1,690.46-2,333.19-982.42

Finding the Fourth Proportional to 1,690.46, 2,333.19 and 982.42

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Solution

The fourth proportional to 1,690.46, 2,333.19 and 982.42 is: 1,355.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.46 : 2,333.19 = 982.42 : x
  2. Step 2: Convert to fraction form
    1,690.46/2,333.19 = 982.42/x
  3. Step 3: Cross multiply
    1,690.46x = 2,333.19 × 982.42
  4. Step 4: Simplify right side
    1,690.46x = 2,292,172.52
  5. Step 5: Solve for x
    x = 2,292,172.52/1,690.46
  6. Step 6: Final answer
    x = 1,355.95

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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.