Home / 5,279.33-7,920.11-1,992.35

Finding the Fourth Proportional to 5,279.33, 7,920.11 and 1,992.35

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Solution

The fourth proportional to 5,279.33, 7,920.11 and 1,992.35 is: 2,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.33 : 7,920.11 = 1,992.35 : x
  2. Step 2: Convert to fraction form
    5,279.33/7,920.11 = 1,992.35/x
  3. Step 3: Cross multiply
    5,279.33x = 7,920.11 × 1,992.35
  4. Step 4: Simplify right side
    5,279.33x = 15,779,655.94
  5. Step 5: Solve for x
    x = 15,779,655.94/5,279.33
  6. Step 6: Final answer
    x = 2,988.95

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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.