Home / 5,279.22-7,920.95-1,993.24

Finding the Fourth Proportional to 5,279.22, 7,920.95 and 1,993.24

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Solution

The fourth proportional to 5,279.22, 7,920.95 and 1,993.24 is: 2,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.22 : 7,920.95 = 1,993.24 : x
  2. Step 2: Convert to fraction form
    5,279.22/7,920.95 = 1,993.24/x
  3. Step 3: Cross multiply
    5,279.22x = 7,920.95 × 1,993.24
  4. Step 4: Simplify right side
    5,279.22x = 15,788,354.38
  5. Step 5: Solve for x
    x = 15,788,354.38/5,279.22
  6. Step 6: Final answer
    x = 2,990.66

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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.