Home / 8,185.32-12,279.63-2,638.26

Finding the Fourth Proportional to 8,185.32, 12,279.63 and 2,638.26

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Solution

The fourth proportional to 8,185.32, 12,279.63 and 2,638.26 is: 3,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.32 : 12,279.63 = 2,638.26 : x
  2. Step 2: Convert to fraction form
    8,185.32/12,279.63 = 2,638.26/x
  3. Step 3: Cross multiply
    8,185.32x = 12,279.63 × 2,638.26
  4. Step 4: Simplify right side
    8,185.32x = 32,396,856.64
  5. Step 5: Solve for x
    x = 32,396,856.64/8,185.32
  6. Step 6: Final answer
    x = 3,957.92

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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.