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Finding the Fourth Proportional to 9,625, 13,283.12 and 5,645.68

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Solution

The fourth proportional to 9,625, 13,283.12 and 5,645.68 is: 7,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,625 : 13,283.12 = 5,645.68 : x
  2. Step 2: Convert to fraction form
    9,625/13,283.12 = 5,645.68/x
  3. Step 3: Cross multiply
    9,625x = 13,283.12 × 5,645.68
  4. Step 4: Simplify right side
    9,625x = 74,992,244.92
  5. Step 5: Solve for x
    x = 74,992,244.92/9,625
  6. Step 6: Final answer
    x = 7,791.40

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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.