Home / 4,712.76-7,072.28-2,115.69

Finding the Fourth Proportional to 4,712.76, 7,072.28 and 2,115.69

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Solution

The fourth proportional to 4,712.76, 7,072.28 and 2,115.69 is: 3,174.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,712.76 : 7,072.28 = 2,115.69 : x
  2. Step 2: Convert to fraction form
    4,712.76/7,072.28 = 2,115.69/x
  3. Step 3: Cross multiply
    4,712.76x = 7,072.28 × 2,115.69
  4. Step 4: Simplify right side
    4,712.76x = 14,962,741.49
  5. Step 5: Solve for x
    x = 14,962,741.49/4,712.76
  6. Step 6: Final answer
    x = 3,174.94

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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.