Home / 5,279.07-7,919.79-1,992.18

Finding the Fourth Proportional to 5,279.07, 7,919.79 and 1,992.18

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Solution

The fourth proportional to 5,279.07, 7,919.79 and 1,992.18 is: 2,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.07 : 7,919.79 = 1,992.18 : x
  2. Step 2: Convert to fraction form
    5,279.07/7,919.79 = 1,992.18/x
  3. Step 3: Cross multiply
    5,279.07x = 7,919.79 × 1,992.18
  4. Step 4: Simplify right side
    5,279.07x = 15,777,647.24
  5. Step 5: Solve for x
    x = 15,777,647.24/5,279.07
  6. Step 6: Final answer
    x = 2,988.72

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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.