Home / 5,428.87-7,490.31-3,189.93

Finding the Fourth Proportional to 5,428.87, 7,490.31 and 3,189.93

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Solution

The fourth proportional to 5,428.87, 7,490.31 and 3,189.93 is: 4,401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.87 : 7,490.31 = 3,189.93 : x
  2. Step 2: Convert to fraction form
    5,428.87/7,490.31 = 3,189.93/x
  3. Step 3: Cross multiply
    5,428.87x = 7,490.31 × 3,189.93
  4. Step 4: Simplify right side
    5,428.87x = 23,893,584.60
  5. Step 5: Solve for x
    x = 23,893,584.60/5,428.87
  6. Step 6: Final answer
    x = 4,401.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.