Home / 8,213.09-12,319.64-2,666.44

Finding the Fourth Proportional to 8,213.09, 12,319.64 and 2,666.44

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Solution

The fourth proportional to 8,213.09, 12,319.64 and 2,666.44 is: 3,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.09 : 12,319.64 = 2,666.44 : x
  2. Step 2: Convert to fraction form
    8,213.09/12,319.64 = 2,666.44/x
  3. Step 3: Cross multiply
    8,213.09x = 12,319.64 × 2,666.44
  4. Step 4: Simplify right side
    8,213.09x = 32,849,580.88
  5. Step 5: Solve for x
    x = 32,849,580.88/8,213.09
  6. Step 6: Final answer
    x = 3,999.66

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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.