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Finding the Fourth Proportional to 2,082, 3,113.32 and 1,555.84

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Solution

The fourth proportional to 2,082, 3,113.32 and 1,555.84 is: 2,326.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082 : 3,113.32 = 1,555.84 : x
  2. Step 2: Convert to fraction form
    2,082/3,113.32 = 1,555.84/x
  3. Step 3: Cross multiply
    2,082x = 3,113.32 × 1,555.84
  4. Step 4: Simplify right side
    2,082x = 4,843,827.79
  5. Step 5: Solve for x
    x = 4,843,827.79/2,082
  6. Step 6: Final answer
    x = 2,326.53

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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.