Home / 5,219.70-7,827.46-1,931.68

Finding the Fourth Proportional to 5,219.70, 7,827.46 and 1,931.68

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Solution

The fourth proportional to 5,219.70, 7,827.46 and 1,931.68 is: 2,896.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.70 : 7,827.46 = 1,931.68 : x
  2. Step 2: Convert to fraction form
    5,219.70/7,827.46 = 1,931.68/x
  3. Step 3: Cross multiply
    5,219.70x = 7,827.46 × 1,931.68
  4. Step 4: Simplify right side
    5,219.70x = 15,120,147.93
  5. Step 5: Solve for x
    x = 15,120,147.93/5,219.70
  6. Step 6: Final answer
    x = 2,896.75

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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.