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Finding the Fourth Proportional to 7,010.50, 9,674.50 and 3,866.90

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Solution

The fourth proportional to 7,010.50, 9,674.50 and 3,866.90 is: 5,336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,010.50 : 9,674.50 = 3,866.90 : x
  2. Step 2: Convert to fraction form
    7,010.50/9,674.50 = 3,866.90/x
  3. Step 3: Cross multiply
    7,010.50x = 9,674.50 × 3,866.90
  4. Step 4: Simplify right side
    7,010.50x = 37,410,324.05
  5. Step 5: Solve for x
    x = 37,410,324.05/7,010.50
  6. Step 6: Final answer
    x = 5,336.33

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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.