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Finding the Fourth Proportional to 7,072.20, 10,608.30 and 7,007.40

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Solution

The fourth proportional to 7,072.20, 10,608.30 and 7,007.40 is: 10,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.20 : 10,608.30 = 7,007.40 : x
  2. Step 2: Convert to fraction form
    7,072.20/10,608.30 = 7,007.40/x
  3. Step 3: Cross multiply
    7,072.20x = 10,608.30 × 7,007.40
  4. Step 4: Simplify right side
    7,072.20x = 74,336,601.42
  5. Step 5: Solve for x
    x = 74,336,601.42/7,072.20
  6. Step 6: Final answer
    x = 10,511.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.