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Finding the Fourth Proportional to 7,189.74, 10,784.61 and 1,995.62

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Solution

The fourth proportional to 7,189.74, 10,784.61 and 1,995.62 is: 2,993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.74 : 10,784.61 = 1,995.62 : x
  2. Step 2: Convert to fraction form
    7,189.74/10,784.61 = 1,995.62/x
  3. Step 3: Cross multiply
    7,189.74x = 10,784.61 × 1,995.62
  4. Step 4: Simplify right side
    7,189.74x = 21,521,929.49
  5. Step 5: Solve for x
    x = 21,521,929.49/7,189.74
  6. Step 6: Final answer
    x = 2,993.42

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Double scale
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Similar ratio
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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.