Home / 5,218.70-7,828.05-1,758.38

Finding the Fourth Proportional to 5,218.70, 7,828.05 and 1,758.38

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Solution

The fourth proportional to 5,218.70, 7,828.05 and 1,758.38 is: 2,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.70 : 7,828.05 = 1,758.38 : x
  2. Step 2: Convert to fraction form
    5,218.70/7,828.05 = 1,758.38/x
  3. Step 3: Cross multiply
    5,218.70x = 7,828.05 × 1,758.38
  4. Step 4: Simplify right side
    5,218.70x = 13,764,686.56
  5. Step 5: Solve for x
    x = 13,764,686.56/5,218.70
  6. Step 6: Final answer
    x = 2,637.57

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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.