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Finding the Fourth Proportional to 8,415.84, 12,651.72 and 5,968.20

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Solution

The fourth proportional to 8,415.84, 12,651.72 and 5,968.20 is: 8,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.84 : 12,651.72 = 5,968.20 : x
  2. Step 2: Convert to fraction form
    8,415.84/12,651.72 = 5,968.20/x
  3. Step 3: Cross multiply
    8,415.84x = 12,651.72 × 5,968.20
  4. Step 4: Simplify right side
    8,415.84x = 75,507,995.30
  5. Step 5: Solve for x
    x = 75,507,995.30/8,415.84
  6. Step 6: Final answer
    x = 8,972.13

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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.