Home / 5,279.08-7,920.75-1,993.12

Finding the Fourth Proportional to 5,279.08, 7,920.75 and 1,993.12

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Solution

The fourth proportional to 5,279.08, 7,920.75 and 1,993.12 is: 2,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.08 : 7,920.75 = 1,993.12 : x
  2. Step 2: Convert to fraction form
    5,279.08/7,920.75 = 1,993.12/x
  3. Step 3: Cross multiply
    5,279.08x = 7,920.75 × 1,993.12
  4. Step 4: Simplify right side
    5,279.08x = 15,787,005.24
  5. Step 5: Solve for x
    x = 15,787,005.24/5,279.08
  6. Step 6: Final answer
    x = 2,990.48

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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.