Home / 8,077.23-12,115.91-6,978.33

Finding the Fourth Proportional to 8,077.23, 12,115.91 and 6,978.33

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Solution

The fourth proportional to 8,077.23, 12,115.91 and 6,978.33 is: 10,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.23 : 12,115.91 = 6,978.33 : x
  2. Step 2: Convert to fraction form
    8,077.23/12,115.91 = 6,978.33/x
  3. Step 3: Cross multiply
    8,077.23x = 12,115.91 × 6,978.33
  4. Step 4: Simplify right side
    8,077.23x = 84,548,835.68
  5. Step 5: Solve for x
    x = 84,548,835.68/8,077.23
  6. Step 6: Final answer
    x = 10,467.55

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1.5x scale

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.