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Finding the Fourth Proportional to 8,391.03, 12,588.06 and 3,457.92

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Solution

The fourth proportional to 8,391.03, 12,588.06 and 3,457.92 is: 5,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.03 : 12,588.06 = 3,457.92 : x
  2. Step 2: Convert to fraction form
    8,391.03/12,588.06 = 3,457.92/x
  3. Step 3: Cross multiply
    8,391.03x = 12,588.06 × 3,457.92
  4. Step 4: Simplify right side
    8,391.03x = 43,528,504.44
  5. Step 5: Solve for x
    x = 43,528,504.44/8,391.03
  6. Step 6: Final answer
    x = 5,187.50

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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.