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Finding the Fourth Proportional to 8,589.89, 11,854.39 and 4,813.09

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Solution

The fourth proportional to 8,589.89, 11,854.39 and 4,813.09 is: 6,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.89 : 11,854.39 = 4,813.09 : x
  2. Step 2: Convert to fraction form
    8,589.89/11,854.39 = 4,813.09/x
  3. Step 3: Cross multiply
    8,589.89x = 11,854.39 × 4,813.09
  4. Step 4: Simplify right side
    8,589.89x = 57,056,162.63
  5. Step 5: Solve for x
    x = 57,056,162.63/8,589.89
  6. Step 6: Final answer
    x = 6,642.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.