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Finding the Fourth Proportional to 4,887, 7,331.72 and 1,424.25

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Solution

The fourth proportional to 4,887, 7,331.72 and 1,424.25 is: 2,136.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,887 : 7,331.72 = 1,424.25 : x
  2. Step 2: Convert to fraction form
    4,887/7,331.72 = 1,424.25/x
  3. Step 3: Cross multiply
    4,887x = 7,331.72 × 1,424.25
  4. Step 4: Simplify right side
    4,887x = 10,442,195.09
  5. Step 5: Solve for x
    x = 10,442,195.09/4,887
  6. Step 6: Final answer
    x = 2,136.73

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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.