Home / 1,427.36-2,140.16-933.48

Finding the Fourth Proportional to 1,427.36, 2,140.16 and 933.48

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Solution

The fourth proportional to 1,427.36, 2,140.16 and 933.48 is: 1,399.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.36 : 2,140.16 = 933.48 : x
  2. Step 2: Convert to fraction form
    1,427.36/2,140.16 = 933.48/x
  3. Step 3: Cross multiply
    1,427.36x = 2,140.16 × 933.48
  4. Step 4: Simplify right side
    1,427.36x = 1,997,796.56
  5. Step 5: Solve for x
    x = 1,997,796.56/1,427.36
  6. Step 6: Final answer
    x = 1,399.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.