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Finding the Fourth Proportional to 3,156.92, 4,354.74 and 1,975.94

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Solution

The fourth proportional to 3,156.92, 4,354.74 and 1,975.94 is: 2,725.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.92 : 4,354.74 = 1,975.94 : x
  2. Step 2: Convert to fraction form
    3,156.92/4,354.74 = 1,975.94/x
  3. Step 3: Cross multiply
    3,156.92x = 4,354.74 × 1,975.94
  4. Step 4: Simplify right side
    3,156.92x = 8,604,704.96
  5. Step 5: Solve for x
    x = 8,604,704.96/3,156.92
  6. Step 6: Final answer
    x = 2,725.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.