Home / 3,188.63-4,781.70-1,108.22

Finding the Fourth Proportional to 3,188.63, 4,781.70 and 1,108.22

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Solution

The fourth proportional to 3,188.63, 4,781.70 and 1,108.22 is: 1,661.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.63 : 4,781.70 = 1,108.22 : x
  2. Step 2: Convert to fraction form
    3,188.63/4,781.70 = 1,108.22/x
  3. Step 3: Cross multiply
    3,188.63x = 4,781.70 × 1,108.22
  4. Step 4: Simplify right side
    3,188.63x = 5,299,151.67
  5. Step 5: Solve for x
    x = 5,299,151.67/3,188.63
  6. Step 6: Final answer
    x = 1,661.89

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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.