Home / 7,619.06-11,428.52-5,781.47

Finding the Fourth Proportional to 7,619.06, 11,428.52 and 5,781.47

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Solution

The fourth proportional to 7,619.06, 11,428.52 and 5,781.47 is: 8,672.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.06 : 11,428.52 = 5,781.47 : x
  2. Step 2: Convert to fraction form
    7,619.06/11,428.52 = 5,781.47/x
  3. Step 3: Cross multiply
    7,619.06x = 11,428.52 × 5,781.47
  4. Step 4: Simplify right side
    7,619.06x = 66,073,559.47
  5. Step 5: Solve for x
    x = 66,073,559.47/7,619.06
  6. Step 6: Final answer
    x = 8,672.14

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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.