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Finding the Fourth Proportional to 7,222.78, 9,957.83 and 6,484.67

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Solution

The fourth proportional to 7,222.78, 9,957.83 and 6,484.67 is: 8,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.78 : 9,957.83 = 6,484.67 : x
  2. Step 2: Convert to fraction form
    7,222.78/9,957.83 = 6,484.67/x
  3. Step 3: Cross multiply
    7,222.78x = 9,957.83 × 6,484.67
  4. Step 4: Simplify right side
    7,222.78x = 64,573,241.47
  5. Step 5: Solve for x
    x = 64,573,241.47/7,222.78
  6. Step 6: Final answer
    x = 8,940.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.