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Finding the Fourth Proportional to 3,919.40, 5,879.25 and 997.63

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Solution

The fourth proportional to 3,919.40, 5,879.25 and 997.63 is: 1,496.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.40 : 5,879.25 = 997.63 : x
  2. Step 2: Convert to fraction form
    3,919.40/5,879.25 = 997.63/x
  3. Step 3: Cross multiply
    3,919.40x = 5,879.25 × 997.63
  4. Step 4: Simplify right side
    3,919.40x = 5,865,316.18
  5. Step 5: Solve for x
    x = 5,865,316.18/3,919.40
  6. Step 6: Final answer
    x = 1,496.48

Related Problems

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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.