Home / 5,187.15-7,781.09-1,489.41

Finding the Fourth Proportional to 5,187.15, 7,781.09 and 1,489.41

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Solution

The fourth proportional to 5,187.15, 7,781.09 and 1,489.41 is: 2,234.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.15 : 7,781.09 = 1,489.41 : x
  2. Step 2: Convert to fraction form
    5,187.15/7,781.09 = 1,489.41/x
  3. Step 3: Cross multiply
    5,187.15x = 7,781.09 × 1,489.41
  4. Step 4: Simplify right side
    5,187.15x = 11,589,225.81
  5. Step 5: Solve for x
    x = 11,589,225.81/5,187.15
  6. Step 6: Final answer
    x = 2,234.22

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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.