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Finding the Fourth Proportional to 6,610.63, 9,915.95 and 1,993.63

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Solution

The fourth proportional to 6,610.63, 9,915.95 and 1,993.63 is: 2,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.63 : 9,915.95 = 1,993.63 : x
  2. Step 2: Convert to fraction form
    6,610.63/9,915.95 = 1,993.63/x
  3. Step 3: Cross multiply
    6,610.63x = 9,915.95 × 1,993.63
  4. Step 4: Simplify right side
    6,610.63x = 19,768,675.85
  5. Step 5: Solve for x
    x = 19,768,675.85/6,610.63
  6. Step 6: Final answer
    x = 2,990.44

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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.