Home / 1,420.23-2,128.37-1,073.28

Finding the Fourth Proportional to 1,420.23, 2,128.37 and 1,073.28

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Solution

The fourth proportional to 1,420.23, 2,128.37 and 1,073.28 is: 1,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.23 : 2,128.37 = 1,073.28 : x
  2. Step 2: Convert to fraction form
    1,420.23/2,128.37 = 1,073.28/x
  3. Step 3: Cross multiply
    1,420.23x = 2,128.37 × 1,073.28
  4. Step 4: Simplify right side
    1,420.23x = 2,284,334.32
  5. Step 5: Solve for x
    x = 2,284,334.32/1,420.23
  6. Step 6: Final answer
    x = 1,608.43

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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.