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Finding the Fourth Proportional to 5,391.71, 8,087.03 and 1,693.85

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Solution

The fourth proportional to 5,391.71, 8,087.03 and 1,693.85 is: 2,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.71 : 8,087.03 = 1,693.85 : x
  2. Step 2: Convert to fraction form
    5,391.71/8,087.03 = 1,693.85/x
  3. Step 3: Cross multiply
    5,391.71x = 8,087.03 × 1,693.85
  4. Step 4: Simplify right side
    5,391.71x = 13,698,173.21
  5. Step 5: Solve for x
    x = 13,698,173.21/5,391.71
  6. Step 6: Final answer
    x = 2,540.60

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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.