Home / 7,124.25-9,832.68-3,979.83

Finding the Fourth Proportional to 7,124.25, 9,832.68 and 3,979.83

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Solution

The fourth proportional to 7,124.25, 9,832.68 and 3,979.83 is: 5,492.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.25 : 9,832.68 = 3,979.83 : x
  2. Step 2: Convert to fraction form
    7,124.25/9,832.68 = 3,979.83/x
  3. Step 3: Cross multiply
    7,124.25x = 9,832.68 × 3,979.83
  4. Step 4: Simplify right side
    7,124.25x = 39,132,394.84
  5. Step 5: Solve for x
    x = 39,132,394.84/7,124.25
  6. Step 6: Final answer
    x = 5,492.84

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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.