Home / 8,078.94-11,145.20-4,721.90

Finding the Fourth Proportional to 8,078.94, 11,145.20 and 4,721.90

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Solution

The fourth proportional to 8,078.94, 11,145.20 and 4,721.90 is: 6,514.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.94 : 11,145.20 = 4,721.90 : x
  2. Step 2: Convert to fraction form
    8,078.94/11,145.20 = 4,721.90/x
  3. Step 3: Cross multiply
    8,078.94x = 11,145.20 × 4,721.90
  4. Step 4: Simplify right side
    8,078.94x = 52,626,440.54
  5. Step 5: Solve for x
    x = 52,626,440.54/8,078.94
  6. Step 6: Final answer
    x = 6,514.03

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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.