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Finding the Fourth Proportional to 4,878.99, 6,732.96 and 2,640.87

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Solution

The fourth proportional to 4,878.99, 6,732.96 and 2,640.87 is: 3,644.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.99 : 6,732.96 = 2,640.87 : x
  2. Step 2: Convert to fraction form
    4,878.99/6,732.96 = 2,640.87/x
  3. Step 3: Cross multiply
    4,878.99x = 6,732.96 × 2,640.87
  4. Step 4: Simplify right side
    4,878.99x = 17,780,872.08
  5. Step 5: Solve for x
    x = 17,780,872.08/4,878.99
  6. Step 6: Final answer
    x = 3,644.38

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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.