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Finding the Fourth Proportional to 8,415.14, 12,588.01 and 6,917.49

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Solution

The fourth proportional to 8,415.14, 12,588.01 and 6,917.49 is: 10,347.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.14 : 12,588.01 = 6,917.49 : x
  2. Step 2: Convert to fraction form
    8,415.14/12,588.01 = 6,917.49/x
  3. Step 3: Cross multiply
    8,415.14x = 12,588.01 × 6,917.49
  4. Step 4: Simplify right side
    8,415.14x = 87,077,416.00
  5. Step 5: Solve for x
    x = 87,077,416.00/8,415.14
  6. Step 6: Final answer
    x = 10,347.71

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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.