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Finding the Fourth Proportional to 4,721.98, 7,082.01 and 4,487.80

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Solution

The fourth proportional to 4,721.98, 7,082.01 and 4,487.80 is: 6,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.98 : 7,082.01 = 4,487.80 : x
  2. Step 2: Convert to fraction form
    4,721.98/7,082.01 = 4,487.80/x
  3. Step 3: Cross multiply
    4,721.98x = 7,082.01 × 4,487.80
  4. Step 4: Simplify right side
    4,721.98x = 31,782,644.48
  5. Step 5: Solve for x
    x = 31,782,644.48/4,721.98
  6. Step 6: Final answer
    x = 6,730.79

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1.5x scale

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.