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Finding the Fourth Proportional to 8,457.40, 12,669.09 and 4,754.08

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Solution

The fourth proportional to 8,457.40, 12,669.09 and 4,754.08 is: 7,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.40 : 12,669.09 = 4,754.08 : x
  2. Step 2: Convert to fraction form
    8,457.40/12,669.09 = 4,754.08/x
  3. Step 3: Cross multiply
    8,457.40x = 12,669.09 × 4,754.08
  4. Step 4: Simplify right side
    8,457.40x = 60,229,867.39
  5. Step 5: Solve for x
    x = 60,229,867.39/8,457.40
  6. Step 6: Final answer
    x = 7,121.56

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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.