Home / 3,188.70-4,781.09-1,238.63

Finding the Fourth Proportional to 3,188.70, 4,781.09 and 1,238.63

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Solution

The fourth proportional to 3,188.70, 4,781.09 and 1,238.63 is: 1,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.70 : 4,781.09 = 1,238.63 : x
  2. Step 2: Convert to fraction form
    3,188.70/4,781.09 = 1,238.63/x
  3. Step 3: Cross multiply
    3,188.70x = 4,781.09 × 1,238.63
  4. Step 4: Simplify right side
    3,188.70x = 5,921,980.70
  5. Step 5: Solve for x
    x = 5,921,980.70/3,188.70
  6. Step 6: Final answer
    x = 1,857.18

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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.