Home / 1,429.44-1,971.72-1,260.96

Finding the Fourth Proportional to 1,429.44, 1,971.72 and 1,260.96

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Solution

The fourth proportional to 1,429.44, 1,971.72 and 1,260.96 is: 1,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.44 : 1,971.72 = 1,260.96 : x
  2. Step 2: Convert to fraction form
    1,429.44/1,971.72 = 1,260.96/x
  3. Step 3: Cross multiply
    1,429.44x = 1,971.72 × 1,260.96
  4. Step 4: Simplify right side
    1,429.44x = 2,486,260.05
  5. Step 5: Solve for x
    x = 2,486,260.05/1,429.44
  6. Step 6: Final answer
    x = 1,739.32

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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.