Home / 1,427.36-2,141.36-453.45

Finding the Fourth Proportional to 1,427.36, 2,141.36 and 453.45

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Solution

The fourth proportional to 1,427.36, 2,141.36 and 453.45 is: 680.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.36 : 2,141.36 = 453.45 : x
  2. Step 2: Convert to fraction form
    1,427.36/2,141.36 = 453.45/x
  3. Step 3: Cross multiply
    1,427.36x = 2,141.36 × 453.45
  4. Step 4: Simplify right side
    1,427.36x = 970,997.42
  5. Step 5: Solve for x
    x = 970,997.42/1,427.36
  6. Step 6: Final answer
    x = 680.28

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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.