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Finding the Fourth Proportional to 6,865.71, 9,474.71 and 3,721.89

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Solution

The fourth proportional to 6,865.71, 9,474.71 and 3,721.89 is: 5,136.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,865.71 : 9,474.71 = 3,721.89 : x
  2. Step 2: Convert to fraction form
    6,865.71/9,474.71 = 3,721.89/x
  3. Step 3: Cross multiply
    6,865.71x = 9,474.71 × 3,721.89
  4. Step 4: Simplify right side
    6,865.71x = 35,263,809.79
  5. Step 5: Solve for x
    x = 35,263,809.79/6,865.71
  6. Step 6: Final answer
    x = 5,136.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.