Home / 5,178.72-7,766.19-1,890.84

Finding the Fourth Proportional to 5,178.72, 7,766.19 and 1,890.84

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Solution

The fourth proportional to 5,178.72, 7,766.19 and 1,890.84 is: 2,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.72 : 7,766.19 = 1,890.84 : x
  2. Step 2: Convert to fraction form
    5,178.72/7,766.19 = 1,890.84/x
  3. Step 3: Cross multiply
    5,178.72x = 7,766.19 × 1,890.84
  4. Step 4: Simplify right side
    5,178.72x = 14,684,622.70
  5. Step 5: Solve for x
    x = 14,684,622.70/5,178.72
  6. Step 6: Final answer
    x = 2,835.57

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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.