Home / 2,749.80-4,124.88-1,290.36

Finding the Fourth Proportional to 2,749.80, 4,124.88 and 1,290.36

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Solution

The fourth proportional to 2,749.80, 4,124.88 and 1,290.36 is: 1,935.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.80 : 4,124.88 = 1,290.36 : x
  2. Step 2: Convert to fraction form
    2,749.80/4,124.88 = 1,290.36/x
  3. Step 3: Cross multiply
    2,749.80x = 4,124.88 × 1,290.36
  4. Step 4: Simplify right side
    2,749.80x = 5,322,580.16
  5. Step 5: Solve for x
    x = 5,322,580.16/2,749.80
  6. Step 6: Final answer
    x = 1,935.62

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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.