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Finding the Fourth Proportional to 9,159.60, 13,729.80 and 3,610.80

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Solution

The fourth proportional to 9,159.60, 13,729.80 and 3,610.80 is: 5,412.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.60 : 13,729.80 = 3,610.80 : x
  2. Step 2: Convert to fraction form
    9,159.60/13,729.80 = 3,610.80/x
  3. Step 3: Cross multiply
    9,159.60x = 13,729.80 × 3,610.80
  4. Step 4: Simplify right side
    9,159.60x = 49,575,561.84
  5. Step 5: Solve for x
    x = 49,575,561.84/9,159.60
  6. Step 6: Final answer
    x = 5,412.42

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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.