Home / 1,338.10-1,845.37-946.87

Finding the Fourth Proportional to 1,338.10, 1,845.37 and 946.87

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Solution

The fourth proportional to 1,338.10, 1,845.37 and 946.87 is: 1,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.10 : 1,845.37 = 946.87 : x
  2. Step 2: Convert to fraction form
    1,338.10/1,845.37 = 946.87/x
  3. Step 3: Cross multiply
    1,338.10x = 1,845.37 × 946.87
  4. Step 4: Simplify right side
    1,338.10x = 1,747,325.49
  5. Step 5: Solve for x
    x = 1,747,325.49/1,338.10
  6. Step 6: Final answer
    x = 1,305.83

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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.