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Finding the Fourth Proportional to 8,726.63, 13,089.74 and 2,152.87

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Solution

The fourth proportional to 8,726.63, 13,089.74 and 2,152.87 is: 3,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.63 : 13,089.74 = 2,152.87 : x
  2. Step 2: Convert to fraction form
    8,726.63/13,089.74 = 2,152.87/x
  3. Step 3: Cross multiply
    8,726.63x = 13,089.74 × 2,152.87
  4. Step 4: Simplify right side
    8,726.63x = 28,180,481.21
  5. Step 5: Solve for x
    x = 28,180,481.21/8,726.63
  6. Step 6: Final answer
    x = 3,229.25

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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.