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Finding the Fourth Proportional to 8,641.30, 11,922.01 and 4,863.86

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Solution

The fourth proportional to 8,641.30, 11,922.01 and 4,863.86 is: 6,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.30 : 11,922.01 = 4,863.86 : x
  2. Step 2: Convert to fraction form
    8,641.30/11,922.01 = 4,863.86/x
  3. Step 3: Cross multiply
    8,641.30x = 11,922.01 × 4,863.86
  4. Step 4: Simplify right side
    8,641.30x = 57,986,987.56
  5. Step 5: Solve for x
    x = 57,986,987.56/8,641.30
  6. Step 6: Final answer
    x = 6,710.45

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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.