Home / 8,085.26-12,129.34-2,889.92

Finding the Fourth Proportional to 8,085.26, 12,129.34 and 2,889.92

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Solution

The fourth proportional to 8,085.26, 12,129.34 and 2,889.92 is: 4,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.26 : 12,129.34 = 2,889.92 : x
  2. Step 2: Convert to fraction form
    8,085.26/12,129.34 = 2,889.92/x
  3. Step 3: Cross multiply
    8,085.26x = 12,129.34 × 2,889.92
  4. Step 4: Simplify right side
    8,085.26x = 35,052,822.25
  5. Step 5: Solve for x
    x = 35,052,822.25/8,085.26
  6. Step 6: Final answer
    x = 4,335.40

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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.