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Finding the Fourth Proportional to 7,967.68, 10,996.08 and 4,431.12

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Solution

The fourth proportional to 7,967.68, 10,996.08 and 4,431.12 is: 6,115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,967.68 : 10,996.08 = 4,431.12 : x
  2. Step 2: Convert to fraction form
    7,967.68/10,996.08 = 4,431.12/x
  3. Step 3: Cross multiply
    7,967.68x = 10,996.08 × 4,431.12
  4. Step 4: Simplify right side
    7,967.68x = 48,724,950.01
  5. Step 5: Solve for x
    x = 48,724,950.01/7,967.68
  6. Step 6: Final answer
    x = 6,115.32

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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.