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Finding the Fourth Proportional to 6,413.12, 8,850.12 and 3,580.76

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Solution

The fourth proportional to 6,413.12, 8,850.12 and 3,580.76 is: 4,941.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,413.12 : 8,850.12 = 3,580.76 : x
  2. Step 2: Convert to fraction form
    6,413.12/8,850.12 = 3,580.76/x
  3. Step 3: Cross multiply
    6,413.12x = 8,850.12 × 3,580.76
  4. Step 4: Simplify right side
    6,413.12x = 31,690,155.69
  5. Step 5: Solve for x
    x = 31,690,155.69/6,413.12
  6. Step 6: Final answer
    x = 4,941.46

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Half scale
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Double scale
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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.