Home / 7,721.28-11,588.40-3,342.06

Finding the Fourth Proportional to 7,721.28, 11,588.40 and 3,342.06

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Solution

The fourth proportional to 7,721.28, 11,588.40 and 3,342.06 is: 5,015.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.28 : 11,588.40 = 3,342.06 : x
  2. Step 2: Convert to fraction form
    7,721.28/11,588.40 = 3,342.06/x
  3. Step 3: Cross multiply
    7,721.28x = 11,588.40 × 3,342.06
  4. Step 4: Simplify right side
    7,721.28x = 38,729,128.10
  5. Step 5: Solve for x
    x = 38,729,128.10/7,721.28
  6. Step 6: Final answer
    x = 5,015.89

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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.