Home / 3,135.48-4,705.20-1,187.88

Finding the Fourth Proportional to 3,135.48, 4,705.20 and 1,187.88

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Solution

The fourth proportional to 3,135.48, 4,705.20 and 1,187.88 is: 1,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.48 : 4,705.20 = 1,187.88 : x
  2. Step 2: Convert to fraction form
    3,135.48/4,705.20 = 1,187.88/x
  3. Step 3: Cross multiply
    3,135.48x = 4,705.20 × 1,187.88
  4. Step 4: Simplify right side
    3,135.48x = 5,589,212.98
  5. Step 5: Solve for x
    x = 5,589,212.98/3,135.48
  6. Step 6: Final answer
    x = 1,782.57

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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.