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Finding the Fourth Proportional to 8,958.84, 12,343.02 and 6,717.20

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Solution

The fourth proportional to 8,958.84, 12,343.02 and 6,717.20 is: 9,254.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.84 : 12,343.02 = 6,717.20 : x
  2. Step 2: Convert to fraction form
    8,958.84/12,343.02 = 6,717.20/x
  3. Step 3: Cross multiply
    8,958.84x = 12,343.02 × 6,717.20
  4. Step 4: Simplify right side
    8,958.84x = 82,910,533.94
  5. Step 5: Solve for x
    x = 82,910,533.94/8,958.84
  6. Step 6: Final answer
    x = 9,254.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.