Home / 7,739.30-11,607.45-2,191.28

Finding the Fourth Proportional to 7,739.30, 11,607.45 and 2,191.28

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Solution

The fourth proportional to 7,739.30, 11,607.45 and 2,191.28 is: 3,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.30 : 11,607.45 = 2,191.28 : x
  2. Step 2: Convert to fraction form
    7,739.30/11,607.45 = 2,191.28/x
  3. Step 3: Cross multiply
    7,739.30x = 11,607.45 × 2,191.28
  4. Step 4: Simplify right side
    7,739.30x = 25,435,173.04
  5. Step 5: Solve for x
    x = 25,435,173.04/7,739.30
  6. Step 6: Final answer
    x = 3,286.50

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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.