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Finding the Fourth Proportional to 8,457.68, 11,673.92 and 4,921.56

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Solution

The fourth proportional to 8,457.68, 11,673.92 and 4,921.56 is: 6,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.68 : 11,673.92 = 4,921.56 : x
  2. Step 2: Convert to fraction form
    8,457.68/11,673.92 = 4,921.56/x
  3. Step 3: Cross multiply
    8,457.68x = 11,673.92 × 4,921.56
  4. Step 4: Simplify right side
    8,457.68x = 57,453,910.02
  5. Step 5: Solve for x
    x = 57,453,910.02/8,457.68
  6. Step 6: Final answer
    x = 6,793.10

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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.