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Finding the Fourth Proportional to 4,974.28, 7,461.48 and 1,687.30

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Solution

The fourth proportional to 4,974.28, 7,461.48 and 1,687.30 is: 2,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974.28 : 7,461.48 = 1,687.30 : x
  2. Step 2: Convert to fraction form
    4,974.28/7,461.48 = 1,687.30/x
  3. Step 3: Cross multiply
    4,974.28x = 7,461.48 × 1,687.30
  4. Step 4: Simplify right side
    4,974.28x = 12,589,755.20
  5. Step 5: Solve for x
    x = 12,589,755.20/4,974.28
  6. Step 6: Final answer
    x = 2,530.97

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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.