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Finding the Fourth Proportional to 8,950.98, 12,351.84 and 5,174.31

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Solution

The fourth proportional to 8,950.98, 12,351.84 and 5,174.31 is: 7,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,950.98 : 12,351.84 = 5,174.31 : x
  2. Step 2: Convert to fraction form
    8,950.98/12,351.84 = 5,174.31/x
  3. Step 3: Cross multiply
    8,950.98x = 12,351.84 × 5,174.31
  4. Step 4: Simplify right side
    8,950.98x = 63,912,201.03
  5. Step 5: Solve for x
    x = 63,912,201.03/8,950.98
  6. Step 6: Final answer
    x = 7,140.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.