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Finding the Fourth Proportional to 3,995.70, 5,993.55 and 1,074.30

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Solution

The fourth proportional to 3,995.70, 5,993.55 and 1,074.30 is: 1,611.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.70 : 5,993.55 = 1,074.30 : x
  2. Step 2: Convert to fraction form
    3,995.70/5,993.55 = 1,074.30/x
  3. Step 3: Cross multiply
    3,995.70x = 5,993.55 × 1,074.30
  4. Step 4: Simplify right side
    3,995.70x = 6,438,870.77
  5. Step 5: Solve for x
    x = 6,438,870.77/3,995.70
  6. Step 6: Final answer
    x = 1,611.45

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Half scale
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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.