Home / 7,619.82-11,430.69-2,939.70

Finding the Fourth Proportional to 7,619.82, 11,430.69 and 2,939.70

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Solution

The fourth proportional to 7,619.82, 11,430.69 and 2,939.70 is: 4,409.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.82 : 11,430.69 = 2,939.70 : x
  2. Step 2: Convert to fraction form
    7,619.82/11,430.69 = 2,939.70/x
  3. Step 3: Cross multiply
    7,619.82x = 11,430.69 × 2,939.70
  4. Step 4: Simplify right side
    7,619.82x = 33,602,799.39
  5. Step 5: Solve for x
    x = 33,602,799.39/7,619.82
  6. Step 6: Final answer
    x = 4,409.92

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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.