Home / 8,457.68-12,685.26-2,217.80

Finding the Fourth Proportional to 8,457.68, 12,685.26 and 2,217.80

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Solution

The fourth proportional to 8,457.68, 12,685.26 and 2,217.80 is: 3,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.68 : 12,685.26 = 2,217.80 : x
  2. Step 2: Convert to fraction form
    8,457.68/12,685.26 = 2,217.80/x
  3. Step 3: Cross multiply
    8,457.68x = 12,685.26 × 2,217.80
  4. Step 4: Simplify right side
    8,457.68x = 28,133,369.63
  5. Step 5: Solve for x
    x = 28,133,369.63/8,457.68
  6. Step 6: Final answer
    x = 3,326.37

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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.