Home / 8,159.80-12,239.70-2,965

Finding the Fourth Proportional to 8,159.80, 12,239.70 and 2,965

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Solution

The fourth proportional to 8,159.80, 12,239.70 and 2,965 is: 4,447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.80 : 12,239.70 = 2,965 : x
  2. Step 2: Convert to fraction form
    8,159.80/12,239.70 = 2,965/x
  3. Step 3: Cross multiply
    8,159.80x = 12,239.70 × 2,965
  4. Step 4: Simplify right side
    8,159.80x = 36,290,710.50
  5. Step 5: Solve for x
    x = 36,290,710.50/8,159.80
  6. Step 6: Final answer
    x = 4,447.50

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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.