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Finding the Fourth Proportional to 5,287.65, 7,297.19 and 2,929.64

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Solution

The fourth proportional to 5,287.65, 7,297.19 and 2,929.64 is: 4,043.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.65 : 7,297.19 = 2,929.64 : x
  2. Step 2: Convert to fraction form
    5,287.65/7,297.19 = 2,929.64/x
  3. Step 3: Cross multiply
    5,287.65x = 7,297.19 × 2,929.64
  4. Step 4: Simplify right side
    5,287.65x = 21,378,099.56
  5. Step 5: Solve for x
    x = 21,378,099.56/5,287.65
  6. Step 6: Final answer
    x = 4,043.03

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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.