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Finding the Fourth Proportional to 7,841.54, 10,821.48 and 4,304.72

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Solution

The fourth proportional to 7,841.54, 10,821.48 and 4,304.72 is: 5,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.54 : 10,821.48 = 4,304.72 : x
  2. Step 2: Convert to fraction form
    7,841.54/10,821.48 = 4,304.72/x
  3. Step 3: Cross multiply
    7,841.54x = 10,821.48 × 4,304.72
  4. Step 4: Simplify right side
    7,841.54x = 46,583,441.39
  5. Step 5: Solve for x
    x = 46,583,441.39/7,841.54
  6. Step 6: Final answer
    x = 5,940.60

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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.