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Finding the Fourth Proportional to 8,589.71, 11,853.12 and 4,812.59

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Solution

The fourth proportional to 8,589.71, 11,853.12 and 4,812.59 is: 6,640.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.71 : 11,853.12 = 4,812.59 : x
  2. Step 2: Convert to fraction form
    8,589.71/11,853.12 = 4,812.59/x
  3. Step 3: Cross multiply
    8,589.71x = 11,853.12 × 4,812.59
  4. Step 4: Simplify right side
    8,589.71x = 57,044,147.52
  5. Step 5: Solve for x
    x = 57,044,147.52/8,589.71
  6. Step 6: Final answer
    x = 6,640.99

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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.