Home / 2,479.93-3,420.77-2,147.79

Finding the Fourth Proportional to 2,479.93, 3,420.77 and 2,147.79

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Solution

The fourth proportional to 2,479.93, 3,420.77 and 2,147.79 is: 2,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.93 : 3,420.77 = 2,147.79 : x
  2. Step 2: Convert to fraction form
    2,479.93/3,420.77 = 2,147.79/x
  3. Step 3: Cross multiply
    2,479.93x = 3,420.77 × 2,147.79
  4. Step 4: Simplify right side
    2,479.93x = 7,347,067.76
  5. Step 5: Solve for x
    x = 7,347,067.76/2,479.93
  6. Step 6: Final answer
    x = 2,962.61

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1.5x scale

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.