Home / 2,149.20-2,965.14-1,678.86

Finding the Fourth Proportional to 2,149.20, 2,965.14 and 1,678.86

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Solution

The fourth proportional to 2,149.20, 2,965.14 and 1,678.86 is: 2,316.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.20 : 2,965.14 = 1,678.86 : x
  2. Step 2: Convert to fraction form
    2,149.20/2,965.14 = 1,678.86/x
  3. Step 3: Cross multiply
    2,149.20x = 2,965.14 × 1,678.86
  4. Step 4: Simplify right side
    2,149.20x = 4,978,054.94
  5. Step 5: Solve for x
    x = 4,978,054.94/2,149.20
  6. Step 6: Final answer
    x = 2,316.24

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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.