Home / 7,838.57-11,761.69-3,678.91

Finding the Fourth Proportional to 7,838.57, 11,761.69 and 3,678.91

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Solution

The fourth proportional to 7,838.57, 11,761.69 and 3,678.91 is: 5,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,838.57 : 11,761.69 = 3,678.91 : x
  2. Step 2: Convert to fraction form
    7,838.57/11,761.69 = 3,678.91/x
  3. Step 3: Cross multiply
    7,838.57x = 11,761.69 × 3,678.91
  4. Step 4: Simplify right side
    7,838.57x = 43,270,160.36
  5. Step 5: Solve for x
    x = 43,270,160.36/7,838.57
  6. Step 6: Final answer
    x = 5,520.16

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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.