Home / 5,180.70-7,771.18-1,285.04

Finding the Fourth Proportional to 5,180.70, 7,771.18 and 1,285.04

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Solution

The fourth proportional to 5,180.70, 7,771.18 and 1,285.04 is: 1,927.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.70 : 7,771.18 = 1,285.04 : x
  2. Step 2: Convert to fraction form
    5,180.70/7,771.18 = 1,285.04/x
  3. Step 3: Cross multiply
    5,180.70x = 7,771.18 × 1,285.04
  4. Step 4: Simplify right side
    5,180.70x = 9,986,277.15
  5. Step 5: Solve for x
    x = 9,986,277.15/5,180.70
  6. Step 6: Final answer
    x = 1,927.59

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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.