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Finding the Fourth Proportional to 2,912.88, 4,369.90 and 1,352.82

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Solution

The fourth proportional to 2,912.88, 4,369.90 and 1,352.82 is: 2,029.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.88 : 4,369.90 = 1,352.82 : x
  2. Step 2: Convert to fraction form
    2,912.88/4,369.90 = 1,352.82/x
  3. Step 3: Cross multiply
    2,912.88x = 4,369.90 × 1,352.82
  4. Step 4: Simplify right side
    2,912.88x = 5,911,688.12
  5. Step 5: Solve for x
    x = 5,911,688.12/2,912.88
  6. Step 6: Final answer
    x = 2,029.50

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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.