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Finding the Fourth Proportional to 7,609.70, 11,403.81 and 4,490.39

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Solution

The fourth proportional to 7,609.70, 11,403.81 and 4,490.39 is: 6,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,609.70 : 11,403.81 = 4,490.39 : x
  2. Step 2: Convert to fraction form
    7,609.70/11,403.81 = 4,490.39/x
  3. Step 3: Cross multiply
    7,609.70x = 11,403.81 × 4,490.39
  4. Step 4: Simplify right side
    7,609.70x = 51,207,497.37
  5. Step 5: Solve for x
    x = 51,207,497.37/7,609.70
  6. Step 6: Final answer
    x = 6,729.24

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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.