Home / 4,979.95-6,872.28-2,741.78

Finding the Fourth Proportional to 4,979.95, 6,872.28 and 2,741.78

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Solution

The fourth proportional to 4,979.95, 6,872.28 and 2,741.78 is: 3,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.95 : 6,872.28 = 2,741.78 : x
  2. Step 2: Convert to fraction form
    4,979.95/6,872.28 = 2,741.78/x
  3. Step 3: Cross multiply
    4,979.95x = 6,872.28 × 2,741.78
  4. Step 4: Simplify right side
    4,979.95x = 18,842,286.76
  5. Step 5: Solve for x
    x = 18,842,286.76/4,979.95
  6. Step 6: Final answer
    x = 3,783.63

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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.