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Finding the Fourth Proportional to 8,353.62, 12,457.44 and 7,318.44

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Solution

The fourth proportional to 8,353.62, 12,457.44 and 7,318.44 is: 10,913.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,353.62 : 12,457.44 = 7,318.44 : x
  2. Step 2: Convert to fraction form
    8,353.62/12,457.44 = 7,318.44/x
  3. Step 3: Cross multiply
    8,353.62x = 12,457.44 × 7,318.44
  4. Step 4: Simplify right side
    8,353.62x = 91,169,027.19
  5. Step 5: Solve for x
    x = 91,169,027.19/8,353.62
  6. Step 6: Final answer
    x = 10,913.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.