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Finding the Fourth Proportional to 7,172.99, 10,687.39 and 6,770.12

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Solution

The fourth proportional to 7,172.99, 10,687.39 and 6,770.12 is: 10,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.99 : 10,687.39 = 6,770.12 : x
  2. Step 2: Convert to fraction form
    7,172.99/10,687.39 = 6,770.12/x
  3. Step 3: Cross multiply
    7,172.99x = 10,687.39 × 6,770.12
  4. Step 4: Simplify right side
    7,172.99x = 72,354,912.79
  5. Step 5: Solve for x
    x = 72,354,912.79/7,172.99
  6. Step 6: Final answer
    x = 10,087.13

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Half scale
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Double scale
Find fourth proportional to 7,173.99, 10,688.88 and 6,771.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.