Home / 8,389.20-12,588.66-3,457.92

Finding the Fourth Proportional to 8,389.20, 12,588.66 and 3,457.92

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Solution

The fourth proportional to 8,389.20, 12,588.66 and 3,457.92 is: 5,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.20 : 12,588.66 = 3,457.92 : x
  2. Step 2: Convert to fraction form
    8,389.20/12,588.66 = 3,457.92/x
  3. Step 3: Cross multiply
    8,389.20x = 12,588.66 × 3,457.92
  4. Step 4: Simplify right side
    8,389.20x = 43,530,579.19
  5. Step 5: Solve for x
    x = 43,530,579.19/8,389.20
  6. Step 6: Final answer
    x = 5,188.88

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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.