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Finding the Fourth Proportional to 7,551.68, 11,332 and 3,168.80

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Solution

The fourth proportional to 7,551.68, 11,332 and 3,168.80 is: 4,755.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,551.68 : 11,332 = 3,168.80 : x
  2. Step 2: Convert to fraction form
    7,551.68/11,332 = 3,168.80/x
  3. Step 3: Cross multiply
    7,551.68x = 11,332 × 3,168.80
  4. Step 4: Simplify right side
    7,551.68x = 35,908,841.60
  5. Step 5: Solve for x
    x = 35,908,841.60/7,551.68
  6. Step 6: Final answer
    x = 4,755.08

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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.