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Finding the Fourth Proportional to 2,912.31, 4,369.15 and 832.35

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Solution

The fourth proportional to 2,912.31, 4,369.15 and 832.35 is: 1,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.31 : 4,369.15 = 832.35 : x
  2. Step 2: Convert to fraction form
    2,912.31/4,369.15 = 832.35/x
  3. Step 3: Cross multiply
    2,912.31x = 4,369.15 × 832.35
  4. Step 4: Simplify right side
    2,912.31x = 3,636,646.66
  5. Step 5: Solve for x
    x = 3,636,646.66/2,912.31
  6. Step 6: Final answer
    x = 1,248.71

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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.