Home / 5,279.58-7,920.24-1,992.96

Finding the Fourth Proportional to 5,279.58, 7,920.24 and 1,992.96

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Solution

The fourth proportional to 5,279.58, 7,920.24 and 1,992.96 is: 2,989.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.58 : 7,920.24 = 1,992.96 : x
  2. Step 2: Convert to fraction form
    5,279.58/7,920.24 = 1,992.96/x
  3. Step 3: Cross multiply
    5,279.58x = 7,920.24 × 1,992.96
  4. Step 4: Simplify right side
    5,279.58x = 15,784,721.51
  5. Step 5: Solve for x
    x = 15,784,721.51/5,279.58
  6. Step 6: Final answer
    x = 2,989.77

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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.