Home / 2,749.98-4,125.21-1,288.35

Finding the Fourth Proportional to 2,749.98, 4,125.21 and 1,288.35

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Solution

The fourth proportional to 2,749.98, 4,125.21 and 1,288.35 is: 1,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.98 : 4,125.21 = 1,288.35 : x
  2. Step 2: Convert to fraction form
    2,749.98/4,125.21 = 1,288.35/x
  3. Step 3: Cross multiply
    2,749.98x = 4,125.21 × 1,288.35
  4. Step 4: Simplify right side
    2,749.98x = 5,314,714.30
  5. Step 5: Solve for x
    x = 5,314,714.30/2,749.98
  6. Step 6: Final answer
    x = 1,932.64

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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.