Home / 7,814.27-11,721.49-3,430.71

Finding the Fourth Proportional to 7,814.27, 11,721.49 and 3,430.71

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Solution

The fourth proportional to 7,814.27, 11,721.49 and 3,430.71 is: 5,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.27 : 11,721.49 = 3,430.71 : x
  2. Step 2: Convert to fraction form
    7,814.27/11,721.49 = 3,430.71/x
  3. Step 3: Cross multiply
    7,814.27x = 11,721.49 × 3,430.71
  4. Step 4: Simplify right side
    7,814.27x = 40,213,024.38
  5. Step 5: Solve for x
    x = 40,213,024.38/7,814.27
  6. Step 6: Final answer
    x = 5,146.10

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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.