Home / 2,740.80-4,112.76-1,159.39

Finding the Fourth Proportional to 2,740.80, 4,112.76 and 1,159.39

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Solution

The fourth proportional to 2,740.80, 4,112.76 and 1,159.39 is: 1,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.80 : 4,112.76 = 1,159.39 : x
  2. Step 2: Convert to fraction form
    2,740.80/4,112.76 = 1,159.39/x
  3. Step 3: Cross multiply
    2,740.80x = 4,112.76 × 1,159.39
  4. Step 4: Simplify right side
    2,740.80x = 4,768,292.82
  5. Step 5: Solve for x
    x = 4,768,292.82/2,740.80
  6. Step 6: Final answer
    x = 1,739.75

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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.