Home / 1,583.38-2,184.81-919.99

Finding the Fourth Proportional to 1,583.38, 2,184.81 and 919.99

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Solution

The fourth proportional to 1,583.38, 2,184.81 and 919.99 is: 1,269.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.38 : 2,184.81 = 919.99 : x
  2. Step 2: Convert to fraction form
    1,583.38/2,184.81 = 919.99/x
  3. Step 3: Cross multiply
    1,583.38x = 2,184.81 × 919.99
  4. Step 4: Simplify right side
    1,583.38x = 2,010,003.35
  5. Step 5: Solve for x
    x = 2,010,003.35/1,583.38
  6. Step 6: Final answer
    x = 1,269.44

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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.