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Finding the Fourth Proportional to 8,480.94, 12,719.40 and 3,547.92

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Solution

The fourth proportional to 8,480.94, 12,719.40 and 3,547.92 is: 5,321.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.94 : 12,719.40 = 3,547.92 : x
  2. Step 2: Convert to fraction form
    8,480.94/12,719.40 = 3,547.92/x
  3. Step 3: Cross multiply
    8,480.94x = 12,719.40 × 3,547.92
  4. Step 4: Simplify right side
    8,480.94x = 45,127,413.65
  5. Step 5: Solve for x
    x = 45,127,413.65/8,480.94
  6. Step 6: Final answer
    x = 5,321.04

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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.