Home / 7,980.32-11,970.48-2,137.08

Finding the Fourth Proportional to 7,980.32, 11,970.48 and 2,137.08

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Solution

The fourth proportional to 7,980.32, 11,970.48 and 2,137.08 is: 3,205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.32 : 11,970.48 = 2,137.08 : x
  2. Step 2: Convert to fraction form
    7,980.32/11,970.48 = 2,137.08/x
  3. Step 3: Cross multiply
    7,980.32x = 11,970.48 × 2,137.08
  4. Step 4: Simplify right side
    7,980.32x = 25,581,926.30
  5. Step 5: Solve for x
    x = 25,581,926.30/7,980.32
  6. Step 6: Final answer
    x = 3,205.63

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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.