Home / 8,108.16-12,165.60-3,889.32

Finding the Fourth Proportional to 8,108.16, 12,165.60 and 3,889.32

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Solution

The fourth proportional to 8,108.16, 12,165.60 and 3,889.32 is: 5,835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.16 : 12,165.60 = 3,889.32 : x
  2. Step 2: Convert to fraction form
    8,108.16/12,165.60 = 3,889.32/x
  3. Step 3: Cross multiply
    8,108.16x = 12,165.60 × 3,889.32
  4. Step 4: Simplify right side
    8,108.16x = 47,315,911.39
  5. Step 5: Solve for x
    x = 47,315,911.39/8,108.16
  6. Step 6: Final answer
    x = 5,835.59

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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.