Home / 8,211.71-12,318.93-2,663.89

Finding the Fourth Proportional to 8,211.71, 12,318.93 and 2,663.89

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Solution

The fourth proportional to 8,211.71, 12,318.93 and 2,663.89 is: 3,996.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.71 : 12,318.93 = 2,663.89 : x
  2. Step 2: Convert to fraction form
    8,211.71/12,318.93 = 2,663.89/x
  3. Step 3: Cross multiply
    8,211.71x = 12,318.93 × 2,663.89
  4. Step 4: Simplify right side
    8,211.71x = 32,816,243.64
  5. Step 5: Solve for x
    x = 32,816,243.64/8,211.71
  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.