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Finding the Fourth Proportional to 8,358.80, 12,519.71 and 3,413.45

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Solution

The fourth proportional to 8,358.80, 12,519.71 and 3,413.45 is: 5,112.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.80 : 12,519.71 = 3,413.45 : x
  2. Step 2: Convert to fraction form
    8,358.80/12,519.71 = 3,413.45/x
  3. Step 3: Cross multiply
    8,358.80x = 12,519.71 × 3,413.45
  4. Step 4: Simplify right side
    8,358.80x = 42,735,341.50
  5. Step 5: Solve for x
    x = 42,735,341.50/8,358.80
  6. Step 6: Final answer
    x = 5,112.62

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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.