Home / 7,982.53-11,971.35-2,787.19

Finding the Fourth Proportional to 7,982.53, 11,971.35 and 2,787.19

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Solution

The fourth proportional to 7,982.53, 11,971.35 and 2,787.19 is: 4,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.53 : 11,971.35 = 2,787.19 : x
  2. Step 2: Convert to fraction form
    7,982.53/11,971.35 = 2,787.19/x
  3. Step 3: Cross multiply
    7,982.53x = 11,971.35 × 2,787.19
  4. Step 4: Simplify right side
    7,982.53x = 33,366,397.08
  5. Step 5: Solve for x
    x = 33,366,397.08/7,982.53
  6. Step 6: Final answer
    x = 4,179.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.