Home / 8,071.97-12,112.58-3,140.98

Finding the Fourth Proportional to 8,071.97, 12,112.58 and 3,140.98

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Solution

The fourth proportional to 8,071.97, 12,112.58 and 3,140.98 is: 4,713.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.97 : 12,112.58 = 3,140.98 : x
  2. Step 2: Convert to fraction form
    8,071.97/12,112.58 = 3,140.98/x
  3. Step 3: Cross multiply
    8,071.97x = 12,112.58 × 3,140.98
  4. Step 4: Simplify right side
    8,071.97x = 38,045,371.53
  5. Step 5: Solve for x
    x = 38,045,371.53/8,071.97
  6. Step 6: Final answer
    x = 4,713.27

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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.