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Finding the Fourth Proportional to 7,764, 10,714.96 and 4,452.64

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Solution

The fourth proportional to 7,764, 10,714.96 and 4,452.64 is: 6,145.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764 : 10,714.96 = 4,452.64 : x
  2. Step 2: Convert to fraction form
    7,764/10,714.96 = 4,452.64/x
  3. Step 3: Cross multiply
    7,764x = 10,714.96 × 4,452.64
  4. Step 4: Simplify right side
    7,764x = 47,709,859.49
  5. Step 5: Solve for x
    x = 47,709,859.49/7,764
  6. Step 6: Final answer
    x = 6,145.01

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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.