Home / 4,979.90-6,872.40-2,742.02

Finding the Fourth Proportional to 4,979.90, 6,872.40 and 2,742.02

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Solution

The fourth proportional to 4,979.90, 6,872.40 and 2,742.02 is: 3,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.90 : 6,872.40 = 2,742.02 : x
  2. Step 2: Convert to fraction form
    4,979.90/6,872.40 = 2,742.02/x
  3. Step 3: Cross multiply
    4,979.90x = 6,872.40 × 2,742.02
  4. Step 4: Simplify right side
    4,979.90x = 18,844,258.25
  5. Step 5: Solve for x
    x = 18,844,258.25/4,979.90
  6. Step 6: Final answer
    x = 3,784.06

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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.