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Finding the Fourth Proportional to 2,452.30, 3,679.26 and 990.70

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Solution

The fourth proportional to 2,452.30, 3,679.26 and 990.70 is: 1,486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.30 : 3,679.26 = 990.70 : x
  2. Step 2: Convert to fraction form
    2,452.30/3,679.26 = 990.70/x
  3. Step 3: Cross multiply
    2,452.30x = 3,679.26 × 990.70
  4. Step 4: Simplify right side
    2,452.30x = 3,645,042.88
  5. Step 5: Solve for x
    x = 3,645,042.88/2,452.30
  6. Step 6: Final answer
    x = 1,486.38

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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.