Home / 8,209.89-12,316.63-2,663.79

Finding the Fourth Proportional to 8,209.89, 12,316.63 and 2,663.79

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Solution

The fourth proportional to 8,209.89, 12,316.63 and 2,663.79 is: 3,996.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.89 : 12,316.63 = 2,663.79 : x
  2. Step 2: Convert to fraction form
    8,209.89/12,316.63 = 2,663.79/x
  3. Step 3: Cross multiply
    8,209.89x = 12,316.63 × 2,663.79
  4. Step 4: Simplify right side
    8,209.89x = 32,808,919.16
  5. Step 5: Solve for x
    x = 32,808,919.16/8,209.89
  6. Step 6: Final answer
    x = 3,996.27

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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.