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Finding the Fourth Proportional to 2,115.80, 3,174.18 and 882.98

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Solution

The fourth proportional to 2,115.80, 3,174.18 and 882.98 is: 1,324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.80 : 3,174.18 = 882.98 : x
  2. Step 2: Convert to fraction form
    2,115.80/3,174.18 = 882.98/x
  3. Step 3: Cross multiply
    2,115.80x = 3,174.18 × 882.98
  4. Step 4: Simplify right side
    2,115.80x = 2,802,737.46
  5. Step 5: Solve for x
    x = 2,802,737.46/2,115.80
  6. Step 6: Final answer
    x = 1,324.67

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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.