Home / 2,739.45-4,104.45-1,275.60

Finding the Fourth Proportional to 2,739.45, 4,104.45 and 1,275.60

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Solution

The fourth proportional to 2,739.45, 4,104.45 and 1,275.60 is: 1,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.45 : 4,104.45 = 1,275.60 : x
  2. Step 2: Convert to fraction form
    2,739.45/4,104.45 = 1,275.60/x
  3. Step 3: Cross multiply
    2,739.45x = 4,104.45 × 1,275.60
  4. Step 4: Simplify right side
    2,739.45x = 5,235,636.42
  5. Step 5: Solve for x
    x = 5,235,636.42/2,739.45
  6. Step 6: Final answer
    x = 1,911.20

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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.