Home / 7,976.66-11,962.55-2,781.32

Finding the Fourth Proportional to 7,976.66, 11,962.55 and 2,781.32

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Solution

The fourth proportional to 7,976.66, 11,962.55 and 2,781.32 is: 4,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.66 : 11,962.55 = 2,781.32 : x
  2. Step 2: Convert to fraction form
    7,976.66/11,962.55 = 2,781.32/x
  3. Step 3: Cross multiply
    7,976.66x = 11,962.55 × 2,781.32
  4. Step 4: Simplify right side
    7,976.66x = 33,271,605.85
  5. Step 5: Solve for x
    x = 33,271,605.85/7,976.66
  6. Step 6: Final answer
    x = 4,171.12

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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.