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Finding the Fourth Proportional to 3,092.70, 4,638.99 and 752.72

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Solution

The fourth proportional to 3,092.70, 4,638.99 and 752.72 is: 1,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,092.70 : 4,638.99 = 752.72 : x
  2. Step 2: Convert to fraction form
    3,092.70/4,638.99 = 752.72/x
  3. Step 3: Cross multiply
    3,092.70x = 4,638.99 × 752.72
  4. Step 4: Simplify right side
    3,092.70x = 3,491,872.10
  5. Step 5: Solve for x
    x = 3,491,872.10/3,092.70
  6. Step 6: Final answer
    x = 1,129.07

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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.