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Finding the Fourth Proportional to 2,504.59, 3,756.89 and 861.12

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Solution

The fourth proportional to 2,504.59, 3,756.89 and 861.12 is: 1,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,504.59 : 3,756.89 = 861.12 : x
  2. Step 2: Convert to fraction form
    2,504.59/3,756.89 = 861.12/x
  3. Step 3: Cross multiply
    2,504.59x = 3,756.89 × 861.12
  4. Step 4: Simplify right side
    2,504.59x = 3,235,135.27
  5. Step 5: Solve for x
    x = 3,235,135.27/2,504.59
  6. Step 6: Final answer
    x = 1,291.68

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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.