Home / 7,419.88-11,130.54-2,489.56

Finding the Fourth Proportional to 7,419.88, 11,130.54 and 2,489.56

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Solution

The fourth proportional to 7,419.88, 11,130.54 and 2,489.56 is: 3,734.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.88 : 11,130.54 = 2,489.56 : x
  2. Step 2: Convert to fraction form
    7,419.88/11,130.54 = 2,489.56/x
  3. Step 3: Cross multiply
    7,419.88x = 11,130.54 × 2,489.56
  4. Step 4: Simplify right side
    7,419.88x = 27,710,147.16
  5. Step 5: Solve for x
    x = 27,710,147.16/7,419.88
  6. Step 6: Final answer
    x = 3,734.58

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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.