Home / 8,619.82-12,930.93-3,071.52

Finding the Fourth Proportional to 8,619.82, 12,930.93 and 3,071.52

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Solution

The fourth proportional to 8,619.82, 12,930.93 and 3,071.52 is: 4,607.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.82 : 12,930.93 = 3,071.52 : x
  2. Step 2: Convert to fraction form
    8,619.82/12,930.93 = 3,071.52/x
  3. Step 3: Cross multiply
    8,619.82x = 12,930.93 × 3,071.52
  4. Step 4: Simplify right side
    8,619.82x = 39,717,610.11
  5. Step 5: Solve for x
    x = 39,717,610.11/8,619.82
  6. Step 6: Final answer
    x = 4,607.71

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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.