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Finding the Fourth Proportional to 7,659.80, 11,491.04 and 2,729.32

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Solution

The fourth proportional to 7,659.80, 11,491.04 and 2,729.32 is: 4,094.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.80 : 11,491.04 = 2,729.32 : x
  2. Step 2: Convert to fraction form
    7,659.80/11,491.04 = 2,729.32/x
  3. Step 3: Cross multiply
    7,659.80x = 11,491.04 × 2,729.32
  4. Step 4: Simplify right side
    7,659.80x = 31,362,725.29
  5. Step 5: Solve for x
    x = 31,362,725.29/7,659.80
  6. Step 6: Final answer
    x = 4,094.46

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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.