Home / 7,439.76-11,147.57-3,929.58

Finding the Fourth Proportional to 7,439.76, 11,147.57 and 3,929.58

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Solution

The fourth proportional to 7,439.76, 11,147.57 and 3,929.58 is: 5,887.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.76 : 11,147.57 = 3,929.58 : x
  2. Step 2: Convert to fraction form
    7,439.76/11,147.57 = 3,929.58/x
  3. Step 3: Cross multiply
    7,439.76x = 11,147.57 × 3,929.58
  4. Step 4: Simplify right side
    7,439.76x = 43,805,248.47
  5. Step 5: Solve for x
    x = 43,805,248.47/7,439.76
  6. Step 6: Final answer
    x = 5,887.99

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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.