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Finding the Fourth Proportional to 7,201.69, 9,939.12 and 4,369.18

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Solution

The fourth proportional to 7,201.69, 9,939.12 and 4,369.18 is: 6,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.69 : 9,939.12 = 4,369.18 : x
  2. Step 2: Convert to fraction form
    7,201.69/9,939.12 = 4,369.18/x
  3. Step 3: Cross multiply
    7,201.69x = 9,939.12 × 4,369.18
  4. Step 4: Simplify right side
    7,201.69x = 43,425,804.32
  5. Step 5: Solve for x
    x = 43,425,804.32/7,201.69
  6. Step 6: Final answer
    x = 6,029.95

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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.