Home / 1,442.24-1,989.60-1,028.48

Finding the Fourth Proportional to 1,442.24, 1,989.60 and 1,028.48

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Solution

The fourth proportional to 1,442.24, 1,989.60 and 1,028.48 is: 1,418.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.24 : 1,989.60 = 1,028.48 : x
  2. Step 2: Convert to fraction form
    1,442.24/1,989.60 = 1,028.48/x
  3. Step 3: Cross multiply
    1,442.24x = 1,989.60 × 1,028.48
  4. Step 4: Simplify right side
    1,442.24x = 2,046,263.81
  5. Step 5: Solve for x
    x = 2,046,263.81/1,442.24
  6. Step 6: Final answer
    x = 1,418.81

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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.