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Finding the Fourth Proportional to 8,275.50, 12,413.28 and 7,860.24

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Solution

The fourth proportional to 8,275.50, 12,413.28 and 7,860.24 is: 11,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,275.50 : 12,413.28 = 7,860.24 : x
  2. Step 2: Convert to fraction form
    8,275.50/12,413.28 = 7,860.24/x
  3. Step 3: Cross multiply
    8,275.50x = 12,413.28 × 7,860.24
  4. Step 4: Simplify right side
    8,275.50x = 97,571,359.99
  5. Step 5: Solve for x
    x = 97,571,359.99/8,275.50
  6. Step 6: Final answer
    x = 11,790.39

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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.