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Finding the Fourth Proportional to 1,583.37, 2,184.97 and 920.12

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Solution

The fourth proportional to 1,583.37, 2,184.97 and 920.12 is: 1,269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.37 : 2,184.97 = 920.12 : x
  2. Step 2: Convert to fraction form
    1,583.37/2,184.97 = 920.12/x
  3. Step 3: Cross multiply
    1,583.37x = 2,184.97 × 920.12
  4. Step 4: Simplify right side
    1,583.37x = 2,010,423.67
  5. Step 5: Solve for x
    x = 2,010,423.67/1,583.37
  6. Step 6: Final answer
    x = 1,269.71

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