Home / 5,178.44-7,765.82-1,890.76

Finding the Fourth Proportional to 5,178.44, 7,765.82 and 1,890.76

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Solution

The fourth proportional to 5,178.44, 7,765.82 and 1,890.76 is: 2,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.44 : 7,765.82 = 1,890.76 : x
  2. Step 2: Convert to fraction form
    5,178.44/7,765.82 = 1,890.76/x
  3. Step 3: Cross multiply
    5,178.44x = 7,765.82 × 1,890.76
  4. Step 4: Simplify right side
    5,178.44x = 14,683,301.82
  5. Step 5: Solve for x
    x = 14,683,301.82/5,178.44
  6. Step 6: Final answer
    x = 2,835.47

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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.