Home / 1,399.48-1,930.44-1,026.88

Finding the Fourth Proportional to 1,399.48, 1,930.44 and 1,026.88

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Solution

The fourth proportional to 1,399.48, 1,930.44 and 1,026.88 is: 1,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.48 : 1,930.44 = 1,026.88 : x
  2. Step 2: Convert to fraction form
    1,399.48/1,930.44 = 1,026.88/x
  3. Step 3: Cross multiply
    1,399.48x = 1,930.44 × 1,026.88
  4. Step 4: Simplify right side
    1,399.48x = 1,982,330.23
  5. Step 5: Solve for x
    x = 1,982,330.23/1,399.48
  6. Step 6: Final answer
    x = 1,416.48

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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.