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Finding the Fourth Proportional to 8,457.92, 12,660.30 and 5,809.93

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Solution

The fourth proportional to 8,457.92, 12,660.30 and 5,809.93 is: 8,696.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.92 : 12,660.30 = 5,809.93 : x
  2. Step 2: Convert to fraction form
    8,457.92/12,660.30 = 5,809.93/x
  3. Step 3: Cross multiply
    8,457.92x = 12,660.30 × 5,809.93
  4. Step 4: Simplify right side
    8,457.92x = 73,555,425.13
  5. Step 5: Solve for x
    x = 73,555,425.13/8,457.92
  6. Step 6: Final answer
    x = 8,696.63

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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.