Home / 4,078.60-6,117.90-2,782.60

Finding the Fourth Proportional to 4,078.60, 6,117.90 and 2,782.60

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Solution

The fourth proportional to 4,078.60, 6,117.90 and 2,782.60 is: 4,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.60 : 6,117.90 = 2,782.60 : x
  2. Step 2: Convert to fraction form
    4,078.60/6,117.90 = 2,782.60/x
  3. Step 3: Cross multiply
    4,078.60x = 6,117.90 × 2,782.60
  4. Step 4: Simplify right side
    4,078.60x = 17,023,668.54
  5. Step 5: Solve for x
    x = 17,023,668.54/4,078.60
  6. Step 6: Final answer
    x = 4,173.90

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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.