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Finding the Fourth Proportional to 1,682.79, 2,524.34 and 861.76

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Solution

The fourth proportional to 1,682.79, 2,524.34 and 861.76 is: 1,292.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.79 : 2,524.34 = 861.76 : x
  2. Step 2: Convert to fraction form
    1,682.79/2,524.34 = 861.76/x
  3. Step 3: Cross multiply
    1,682.79x = 2,524.34 × 861.76
  4. Step 4: Simplify right side
    1,682.79x = 2,175,375.24
  5. Step 5: Solve for x
    x = 2,175,375.24/1,682.79
  6. Step 6: Final answer
    x = 1,292.72

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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.