Home / 7,385.21-11,077.79-1,838.52

Finding the Fourth Proportional to 7,385.21, 11,077.79 and 1,838.52

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Solution

The fourth proportional to 7,385.21, 11,077.79 and 1,838.52 is: 2,757.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.21 : 11,077.79 = 1,838.52 : x
  2. Step 2: Convert to fraction form
    7,385.21/11,077.79 = 1,838.52/x
  3. Step 3: Cross multiply
    7,385.21x = 11,077.79 × 1,838.52
  4. Step 4: Simplify right side
    7,385.21x = 20,366,738.47
  5. Step 5: Solve for x
    x = 20,366,738.47/7,385.21
  6. Step 6: Final answer
    x = 2,757.77

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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.