Home / 8,091.99-12,120.36-4,386.39

Finding the Fourth Proportional to 8,091.99, 12,120.36 and 4,386.39

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Solution

The fourth proportional to 8,091.99, 12,120.36 and 4,386.39 is: 6,570.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.99 : 12,120.36 = 4,386.39 : x
  2. Step 2: Convert to fraction form
    8,091.99/12,120.36 = 4,386.39/x
  3. Step 3: Cross multiply
    8,091.99x = 12,120.36 × 4,386.39
  4. Step 4: Simplify right side
    8,091.99x = 53,164,625.90
  5. Step 5: Solve for x
    x = 53,164,625.90/8,091.99
  6. Step 6: Final answer
    x = 6,570.03

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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.