Home / 2,979.65-4,113.28-2,236.07

Finding the Fourth Proportional to 2,979.65, 4,113.28 and 2,236.07

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Solution

The fourth proportional to 2,979.65, 4,113.28 and 2,236.07 is: 3,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.65 : 4,113.28 = 2,236.07 : x
  2. Step 2: Convert to fraction form
    2,979.65/4,113.28 = 2,236.07/x
  3. Step 3: Cross multiply
    2,979.65x = 4,113.28 × 2,236.07
  4. Step 4: Simplify right side
    2,979.65x = 9,197,595.09
  5. Step 5: Solve for x
    x = 9,197,595.09/2,979.65
  6. Step 6: Final answer
    x = 3,086.80

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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.