Home / 7,739.40-11,609.08-2,809.02

Finding the Fourth Proportional to 7,739.40, 11,609.08 and 2,809.02

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Solution

The fourth proportional to 7,739.40, 11,609.08 and 2,809.02 is: 4,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.40 : 11,609.08 = 2,809.02 : x
  2. Step 2: Convert to fraction form
    7,739.40/11,609.08 = 2,809.02/x
  3. Step 3: Cross multiply
    7,739.40x = 11,609.08 × 2,809.02
  4. Step 4: Simplify right side
    7,739.40x = 32,610,137.90
  5. Step 5: Solve for x
    x = 32,610,137.90/7,739.40
  6. Step 6: Final answer
    x = 4,213.52

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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.