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Finding the Fourth Proportional to 7,080.21, 9,770.90 and 4,096.98

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Solution

The fourth proportional to 7,080.21, 9,770.90 and 4,096.98 is: 5,653.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.21 : 9,770.90 = 4,096.98 : x
  2. Step 2: Convert to fraction form
    7,080.21/9,770.90 = 4,096.98/x
  3. Step 3: Cross multiply
    7,080.21x = 9,770.90 × 4,096.98
  4. Step 4: Simplify right side
    7,080.21x = 40,031,161.40
  5. Step 5: Solve for x
    x = 40,031,161.40/7,080.21
  6. Step 6: Final answer
    x = 5,653.95

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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.