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Finding the Fourth Proportional to 7,841.34, 10,821.20 and 4,304.68

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Solution

The fourth proportional to 7,841.34, 10,821.20 and 4,304.68 is: 5,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.34 : 10,821.20 = 4,304.68 : x
  2. Step 2: Convert to fraction form
    7,841.34/10,821.20 = 4,304.68/x
  3. Step 3: Cross multiply
    7,841.34x = 10,821.20 × 4,304.68
  4. Step 4: Simplify right side
    7,841.34x = 46,581,754.64
  5. Step 5: Solve for x
    x = 46,581,754.64/7,841.34
  6. Step 6: Final answer
    x = 5,940.53

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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.