Home / 3,979.93-5,492.14-2,211.65

Finding the Fourth Proportional to 3,979.93, 5,492.14 and 2,211.65

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Solution

The fourth proportional to 3,979.93, 5,492.14 and 2,211.65 is: 3,051.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.93 : 5,492.14 = 2,211.65 : x
  2. Step 2: Convert to fraction form
    3,979.93/5,492.14 = 2,211.65/x
  3. Step 3: Cross multiply
    3,979.93x = 5,492.14 × 2,211.65
  4. Step 4: Simplify right side
    3,979.93x = 12,146,658.44
  5. Step 5: Solve for x
    x = 12,146,658.44/3,979.93
  6. Step 6: Final answer
    x = 3,051.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.