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Finding the Fourth Proportional to 8,413.28, 12,603.28 and 6,555.44

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Solution

The fourth proportional to 8,413.28, 12,603.28 and 6,555.44 is: 9,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.28 : 12,603.28 = 6,555.44 : x
  2. Step 2: Convert to fraction form
    8,413.28/12,603.28 = 6,555.44/x
  3. Step 3: Cross multiply
    8,413.28x = 12,603.28 × 6,555.44
  4. Step 4: Simplify right side
    8,413.28x = 82,620,045.84
  5. Step 5: Solve for x
    x = 82,620,045.84/8,413.28
  6. Step 6: Final answer
    x = 9,820.19

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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.