Home / 7,990.32-11,985.48-2,797.68

Finding the Fourth Proportional to 7,990.32, 11,985.48 and 2,797.68

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Solution

The fourth proportional to 7,990.32, 11,985.48 and 2,797.68 is: 4,196.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.32 : 11,985.48 = 2,797.68 : x
  2. Step 2: Convert to fraction form
    7,990.32/11,985.48 = 2,797.68/x
  3. Step 3: Cross multiply
    7,990.32x = 11,985.48 × 2,797.68
  4. Step 4: Simplify right side
    7,990.32x = 33,531,537.69
  5. Step 5: Solve for x
    x = 33,531,537.69/7,990.32
  6. Step 6: Final answer
    x = 4,196.52

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Double scale
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Similar ratio
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1.5x scale

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.