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Finding the Fourth Proportional to 2,393.80, 3,303.42 and 1,399.24

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Solution

The fourth proportional to 2,393.80, 3,303.42 and 1,399.24 is: 1,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.80 : 3,303.42 = 1,399.24 : x
  2. Step 2: Convert to fraction form
    2,393.80/3,303.42 = 1,399.24/x
  3. Step 3: Cross multiply
    2,393.80x = 3,303.42 × 1,399.24
  4. Step 4: Simplify right side
    2,393.80x = 4,622,277.40
  5. Step 5: Solve for x
    x = 4,622,277.40/2,393.80
  6. Step 6: Final answer
    x = 1,930.94

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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.