Home / 7,980.06-11,012.29-4,443.20

Finding the Fourth Proportional to 7,980.06, 11,012.29 and 4,443.20

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Solution

The fourth proportional to 7,980.06, 11,012.29 and 4,443.20 is: 6,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.06 : 11,012.29 = 4,443.20 : x
  2. Step 2: Convert to fraction form
    7,980.06/11,012.29 = 4,443.20/x
  3. Step 3: Cross multiply
    7,980.06x = 11,012.29 × 4,443.20
  4. Step 4: Simplify right side
    7,980.06x = 48,929,729.65
  5. Step 5: Solve for x
    x = 48,929,729.65/7,980.06
  6. Step 6: Final answer
    x = 6,131.50

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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.