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Finding the Fourth Proportional to 2,912.68, 4,368.71 and 832.55

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Solution

The fourth proportional to 2,912.68, 4,368.71 and 832.55 is: 1,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.68 : 4,368.71 = 832.55 : x
  2. Step 2: Convert to fraction form
    2,912.68/4,368.71 = 832.55/x
  3. Step 3: Cross multiply
    2,912.68x = 4,368.71 × 832.55
  4. Step 4: Simplify right side
    2,912.68x = 3,637,157.94
  5. Step 5: Solve for x
    x = 3,637,157.94/2,912.68
  6. Step 6: Final answer
    x = 1,248.73

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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.