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Finding the Fourth Proportional to 2,082.46, 3,123.70 and 543.46

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Solution

The fourth proportional to 2,082.46, 3,123.70 and 543.46 is: 815.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.46 : 3,123.70 = 543.46 : x
  2. Step 2: Convert to fraction form
    2,082.46/3,123.70 = 543.46/x
  3. Step 3: Cross multiply
    2,082.46x = 3,123.70 × 543.46
  4. Step 4: Simplify right side
    2,082.46x = 1,697,606.00
  5. Step 5: Solve for x
    x = 1,697,606.00/2,082.46
  6. Step 6: Final answer
    x = 815.19

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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.