Home / 7,814.07-11,721.92-3,434.40

Finding the Fourth Proportional to 7,814.07, 11,721.92 and 3,434.40

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Solution

The fourth proportional to 7,814.07, 11,721.92 and 3,434.40 is: 5,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.07 : 11,721.92 = 3,434.40 : x
  2. Step 2: Convert to fraction form
    7,814.07/11,721.92 = 3,434.40/x
  3. Step 3: Cross multiply
    7,814.07x = 11,721.92 × 3,434.40
  4. Step 4: Simplify right side
    7,814.07x = 40,257,744.88
  5. Step 5: Solve for x
    x = 40,257,744.88/7,814.07
  6. Step 6: Final answer
    x = 5,151.96

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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.