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Finding the Fourth Proportional to 8,413.76, 12,620.28 and 4,525.76

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Solution

The fourth proportional to 8,413.76, 12,620.28 and 4,525.76 is: 6,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.76 : 12,620.28 = 4,525.76 : x
  2. Step 2: Convert to fraction form
    8,413.76/12,620.28 = 4,525.76/x
  3. Step 3: Cross multiply
    8,413.76x = 12,620.28 × 4,525.76
  4. Step 4: Simplify right side
    8,413.76x = 57,116,358.41
  5. Step 5: Solve for x
    x = 57,116,358.41/8,413.76
  6. Step 6: Final answer
    x = 6,788.45

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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.