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Finding the Fourth Proportional to 5,141.45, 7,712.49 and 1,443.98

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Solution

The fourth proportional to 5,141.45, 7,712.49 and 1,443.98 is: 2,166.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,141.45 : 7,712.49 = 1,443.98 : x
  2. Step 2: Convert to fraction form
    5,141.45/7,712.49 = 1,443.98/x
  3. Step 3: Cross multiply
    5,141.45x = 7,712.49 × 1,443.98
  4. Step 4: Simplify right side
    5,141.45x = 11,136,681.31
  5. Step 5: Solve for x
    x = 11,136,681.31/5,141.45
  6. Step 6: Final answer
    x = 2,166.06

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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.