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Finding the Fourth Proportional to 8,743.74, 13,125.33 and 8,607.66

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Solution

The fourth proportional to 8,743.74, 13,125.33 and 8,607.66 is: 12,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,743.74 : 13,125.33 = 8,607.66 : x
  2. Step 2: Convert to fraction form
    8,743.74/13,125.33 = 8,607.66/x
  3. Step 3: Cross multiply
    8,743.74x = 13,125.33 × 8,607.66
  4. Step 4: Simplify right side
    8,743.74x = 112,978,378.03
  5. Step 5: Solve for x
    x = 112,978,378.03/8,743.74
  6. Step 6: Final answer
    x = 12,921.06

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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.