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Finding the Fourth Proportional to 6,141.69, 9,213.45 and 1,980.33

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Solution

The fourth proportional to 6,141.69, 9,213.45 and 1,980.33 is: 2,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,141.69 : 9,213.45 = 1,980.33 : x
  2. Step 2: Convert to fraction form
    6,141.69/9,213.45 = 1,980.33/x
  3. Step 3: Cross multiply
    6,141.69x = 9,213.45 × 1,980.33
  4. Step 4: Simplify right side
    6,141.69x = 18,245,671.44
  5. Step 5: Solve for x
    x = 18,245,671.44/6,141.69
  6. Step 6: Final answer
    x = 2,970.79

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Double scale
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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.