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Finding the Fourth Proportional to 7,343.80, 11,021.10 and 4,877.80

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Solution

The fourth proportional to 7,343.80, 11,021.10 and 4,877.80 is: 7,320.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,343.80 : 11,021.10 = 4,877.80 : x
  2. Step 2: Convert to fraction form
    7,343.80/11,021.10 = 4,877.80/x
  3. Step 3: Cross multiply
    7,343.80x = 11,021.10 × 4,877.80
  4. Step 4: Simplify right side
    7,343.80x = 53,758,721.58
  5. Step 5: Solve for x
    x = 53,758,721.58/7,343.80
  6. Step 6: Final answer
    x = 7,320.29

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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.