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Finding the Fourth Proportional to 7,885.88, 11,812.84 and 3,663.16

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Solution

The fourth proportional to 7,885.88, 11,812.84 and 3,663.16 is: 5,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.88 : 11,812.84 = 3,663.16 : x
  2. Step 2: Convert to fraction form
    7,885.88/11,812.84 = 3,663.16/x
  3. Step 3: Cross multiply
    7,885.88x = 11,812.84 × 3,663.16
  4. Step 4: Simplify right side
    7,885.88x = 43,272,322.97
  5. Step 5: Solve for x
    x = 43,272,322.97/7,885.88
  6. Step 6: Final answer
    x = 5,487.32

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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.