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Finding the Fourth Proportional to 2,915.84, 4,372.49 and 835.38

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Solution

The fourth proportional to 2,915.84, 4,372.49 and 835.38 is: 1,252.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.84 : 4,372.49 = 835.38 : x
  2. Step 2: Convert to fraction form
    2,915.84/4,372.49 = 835.38/x
  3. Step 3: Cross multiply
    2,915.84x = 4,372.49 × 835.38
  4. Step 4: Simplify right side
    2,915.84x = 3,652,686.52
  5. Step 5: Solve for x
    x = 3,652,686.52/2,915.84
  6. Step 6: Final answer
    x = 1,252.71

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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.