Home / 7,170.72-10,749.66-2,787.14

Finding the Fourth Proportional to 7,170.72, 10,749.66 and 2,787.14

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Solution

The fourth proportional to 7,170.72, 10,749.66 and 2,787.14 is: 4,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.72 : 10,749.66 = 2,787.14 : x
  2. Step 2: Convert to fraction form
    7,170.72/10,749.66 = 2,787.14/x
  3. Step 3: Cross multiply
    7,170.72x = 10,749.66 × 2,787.14
  4. Step 4: Simplify right side
    7,170.72x = 29,960,753.62
  5. Step 5: Solve for x
    x = 29,960,753.62/7,170.72
  6. Step 6: Final answer
    x = 4,178.21

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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.