Home / 8,211.50-12,319.20-2,664.86

Finding the Fourth Proportional to 8,211.50, 12,319.20 and 2,664.86

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Solution

The fourth proportional to 8,211.50, 12,319.20 and 2,664.86 is: 3,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.50 : 12,319.20 = 2,664.86 : x
  2. Step 2: Convert to fraction form
    8,211.50/12,319.20 = 2,664.86/x
  3. Step 3: Cross multiply
    8,211.50x = 12,319.20 × 2,664.86
  4. Step 4: Simplify right side
    8,211.50x = 32,828,943.31
  5. Step 5: Solve for x
    x = 32,828,943.31/8,211.50
  6. Step 6: Final answer
    x = 3,997.92

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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.