Home / 7,420.38-11,133.21-2,490.02

Finding the Fourth Proportional to 7,420.38, 11,133.21 and 2,490.02

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Solution

The fourth proportional to 7,420.38, 11,133.21 and 2,490.02 is: 3,735.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.38 : 11,133.21 = 2,490.02 : x
  2. Step 2: Convert to fraction form
    7,420.38/11,133.21 = 2,490.02/x
  3. Step 3: Cross multiply
    7,420.38x = 11,133.21 × 2,490.02
  4. Step 4: Simplify right side
    7,420.38x = 27,721,847.45
  5. Step 5: Solve for x
    x = 27,721,847.45/7,420.38
  6. Step 6: Final answer
    x = 3,735.91

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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.