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Finding the Fourth Proportional to 5,082.84, 7,624.17 and 1,620

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Solution

The fourth proportional to 5,082.84, 7,624.17 and 1,620 is: 2,429.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,082.84 : 7,624.17 = 1,620 : x
  2. Step 2: Convert to fraction form
    5,082.84/7,624.17 = 1,620/x
  3. Step 3: Cross multiply
    5,082.84x = 7,624.17 × 1,620
  4. Step 4: Simplify right side
    5,082.84x = 12,351,155.40
  5. Step 5: Solve for x
    x = 12,351,155.40/5,082.84
  6. Step 6: Final answer
    x = 2,429.97

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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.