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Finding the Fourth Proportional to 8,641.38, 12,963.33 and 4,259.10

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Solution

The fourth proportional to 8,641.38, 12,963.33 and 4,259.10 is: 6,389.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.38 : 12,963.33 = 4,259.10 : x
  2. Step 2: Convert to fraction form
    8,641.38/12,963.33 = 4,259.10/x
  3. Step 3: Cross multiply
    8,641.38x = 12,963.33 × 4,259.10
  4. Step 4: Simplify right side
    8,641.38x = 55,212,118.80
  5. Step 5: Solve for x
    x = 55,212,118.80/8,641.38
  6. Step 6: Final answer
    x = 6,389.27

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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.