Home / 8,213.36-12,319.08-2,666.72

Finding the Fourth Proportional to 8,213.36, 12,319.08 and 2,666.72

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Solution

The fourth proportional to 8,213.36, 12,319.08 and 2,666.72 is: 3,999.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.36 : 12,319.08 = 2,666.72 : x
  2. Step 2: Convert to fraction form
    8,213.36/12,319.08 = 2,666.72/x
  3. Step 3: Cross multiply
    8,213.36x = 12,319.08 × 2,666.72
  4. Step 4: Simplify right side
    8,213.36x = 32,851,537.02
  5. Step 5: Solve for x
    x = 32,851,537.02/8,213.36
  6. Step 6: Final answer
    x = 3,999.77

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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.