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Finding the Fourth Proportional to 4,722, 7,082.72 and 1,435.12

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Solution

The fourth proportional to 4,722, 7,082.72 and 1,435.12 is: 2,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,722 : 7,082.72 = 1,435.12 : x
  2. Step 2: Convert to fraction form
    4,722/7,082.72 = 1,435.12/x
  3. Step 3: Cross multiply
    4,722x = 7,082.72 × 1,435.12
  4. Step 4: Simplify right side
    4,722x = 10,164,553.13
  5. Step 5: Solve for x
    x = 10,164,553.13/4,722
  6. Step 6: Final answer
    x = 2,152.59

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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.