Home / 8,078.41-12,116.70-2,812.53

Finding the Fourth Proportional to 8,078.41, 12,116.70 and 2,812.53

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Solution

The fourth proportional to 8,078.41, 12,116.70 and 2,812.53 is: 4,218.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.41 : 12,116.70 = 2,812.53 : x
  2. Step 2: Convert to fraction form
    8,078.41/12,116.70 = 2,812.53/x
  3. Step 3: Cross multiply
    8,078.41x = 12,116.70 × 2,812.53
  4. Step 4: Simplify right side
    8,078.41x = 34,078,582.25
  5. Step 5: Solve for x
    x = 34,078,582.25/8,078.41
  6. Step 6: Final answer
    x = 4,218.48

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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.