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Finding the Fourth Proportional to 6,791.92, 9,378.39 and 5,533.18

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Solution

The fourth proportional to 6,791.92, 9,378.39 and 5,533.18 is: 7,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,791.92 : 9,378.39 = 5,533.18 : x
  2. Step 2: Convert to fraction form
    6,791.92/9,378.39 = 5,533.18/x
  3. Step 3: Cross multiply
    6,791.92x = 9,378.39 × 5,533.18
  4. Step 4: Simplify right side
    6,791.92x = 51,892,319.98
  5. Step 5: Solve for x
    x = 51,892,319.98/6,791.92
  6. Step 6: Final answer
    x = 7,640.30

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Half scale
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Double scale
Find fourth proportional to 6,792.92, 9,379.77 and 5,534.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.