Home / 4,781.09-7,170.86-1,271.31

Finding the Fourth Proportional to 4,781.09, 7,170.86 and 1,271.31

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Solution

The fourth proportional to 4,781.09, 7,170.86 and 1,271.31 is: 1,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.09 : 7,170.86 = 1,271.31 : x
  2. Step 2: Convert to fraction form
    4,781.09/7,170.86 = 1,271.31/x
  3. Step 3: Cross multiply
    4,781.09x = 7,170.86 × 1,271.31
  4. Step 4: Simplify right side
    4,781.09x = 9,116,379.67
  5. Step 5: Solve for x
    x = 9,116,379.67/4,781.09
  6. Step 6: Final answer
    x = 1,906.76

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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.