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Finding the Fourth Proportional to 7,218.62, 9,957.36 and 4,384.55

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Solution

The fourth proportional to 7,218.62, 9,957.36 and 4,384.55 is: 6,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.62 : 9,957.36 = 4,384.55 : x
  2. Step 2: Convert to fraction form
    7,218.62/9,957.36 = 4,384.55/x
  3. Step 3: Cross multiply
    7,218.62x = 9,957.36 × 4,384.55
  4. Step 4: Simplify right side
    7,218.62x = 43,658,584.12
  5. Step 5: Solve for x
    x = 43,658,584.12/7,218.62
  6. Step 6: Final answer
    x = 6,048.05

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