Home / 5,279.76-7,920.45-4,623.66

Finding the Fourth Proportional to 5,279.76, 7,920.45 and 4,623.66

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Solution

The fourth proportional to 5,279.76, 7,920.45 and 4,623.66 is: 6,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.76 : 7,920.45 = 4,623.66 : x
  2. Step 2: Convert to fraction form
    5,279.76/7,920.45 = 4,623.66/x
  3. Step 3: Cross multiply
    5,279.76x = 7,920.45 × 4,623.66
  4. Step 4: Simplify right side
    5,279.76x = 36,621,467.85
  5. Step 5: Solve for x
    x = 36,621,467.85/5,279.76
  6. Step 6: Final answer
    x = 6,936.20

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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.