Home / 7,421.90-11,133.38-2,491.49

Finding the Fourth Proportional to 7,421.90, 11,133.38 and 2,491.49

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Solution

The fourth proportional to 7,421.90, 11,133.38 and 2,491.49 is: 3,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.90 : 11,133.38 = 2,491.49 : x
  2. Step 2: Convert to fraction form
    7,421.90/11,133.38 = 2,491.49/x
  3. Step 3: Cross multiply
    7,421.90x = 11,133.38 × 2,491.49
  4. Step 4: Simplify right side
    7,421.90x = 27,738,739.00
  5. Step 5: Solve for x
    x = 27,738,739.00/7,421.90
  6. Step 6: Final answer
    x = 3,737.42

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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.