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Finding the Fourth Proportional to 4,721.86, 7,082.82 and 1,434.94

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Solution

The fourth proportional to 4,721.86, 7,082.82 and 1,434.94 is: 2,152.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.86 : 7,082.82 = 1,434.94 : x
  2. Step 2: Convert to fraction form
    4,721.86/7,082.82 = 1,434.94/x
  3. Step 3: Cross multiply
    4,721.86x = 7,082.82 × 1,434.94
  4. Step 4: Simplify right side
    4,721.86x = 10,163,421.73
  5. Step 5: Solve for x
    x = 10,163,421.73/4,721.86
  6. Step 6: Final answer
    x = 2,152.42

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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.