Home / 7,980.12-11,012.96-4,443.26

Finding the Fourth Proportional to 7,980.12, 11,012.96 and 4,443.26

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Solution

The fourth proportional to 7,980.12, 11,012.96 and 4,443.26 is: 6,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.12 : 11,012.96 = 4,443.26 : x
  2. Step 2: Convert to fraction form
    7,980.12/11,012.96 = 4,443.26/x
  3. Step 3: Cross multiply
    7,980.12x = 11,012.96 × 4,443.26
  4. Step 4: Simplify right side
    7,980.12x = 48,933,367.37
  5. Step 5: Solve for x
    x = 48,933,367.37/7,980.12
  6. Step 6: Final answer
    x = 6,131.91

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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.