Home / 3,109.08-4,286.92-2,547.76

Finding the Fourth Proportional to 3,109.08, 4,286.92 and 2,547.76

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Solution

The fourth proportional to 3,109.08, 4,286.92 and 2,547.76 is: 3,512.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.08 : 4,286.92 = 2,547.76 : x
  2. Step 2: Convert to fraction form
    3,109.08/4,286.92 = 2,547.76/x
  3. Step 3: Cross multiply
    3,109.08x = 4,286.92 × 2,547.76
  4. Step 4: Simplify right side
    3,109.08x = 10,922,043.30
  5. Step 5: Solve for x
    x = 10,922,043.30/3,109.08
  6. Step 6: Final answer
    x = 3,512.95

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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.