Home / 8,679.09-13,001.22-3,992.57

Finding the Fourth Proportional to 8,679.09, 13,001.22 and 3,992.57

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Solution

The fourth proportional to 8,679.09, 13,001.22 and 3,992.57 is: 5,980.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.09 : 13,001.22 = 3,992.57 : x
  2. Step 2: Convert to fraction form
    8,679.09/13,001.22 = 3,992.57/x
  3. Step 3: Cross multiply
    8,679.09x = 13,001.22 × 3,992.57
  4. Step 4: Simplify right side
    8,679.09x = 51,908,264.68
  5. Step 5: Solve for x
    x = 51,908,264.68/8,679.09
  6. Step 6: Final answer
    x = 5,980.84

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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.