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Finding the Fourth Proportional to 7,222.69, 9,968.46 and 4,390.95

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Solution

The fourth proportional to 7,222.69, 9,968.46 and 4,390.95 is: 6,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.69 : 9,968.46 = 4,390.95 : x
  2. Step 2: Convert to fraction form
    7,222.69/9,968.46 = 4,390.95/x
  3. Step 3: Cross multiply
    7,222.69x = 9,968.46 × 4,390.95
  4. Step 4: Simplify right side
    7,222.69x = 43,771,023.38
  5. Step 5: Solve for x
    x = 43,771,023.38/7,222.69
  6. Step 6: Final answer
    x = 6,060.21

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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.