Home / 5,309.44-7,958.08-2,639.68

Finding the Fourth Proportional to 5,309.44, 7,958.08 and 2,639.68

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Solution

The fourth proportional to 5,309.44, 7,958.08 and 2,639.68 is: 3,956.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.44 : 7,958.08 = 2,639.68 : x
  2. Step 2: Convert to fraction form
    5,309.44/7,958.08 = 2,639.68/x
  3. Step 3: Cross multiply
    5,309.44x = 7,958.08 × 2,639.68
  4. Step 4: Simplify right side
    5,309.44x = 21,006,784.61
  5. Step 5: Solve for x
    x = 21,006,784.61/5,309.44
  6. Step 6: Final answer
    x = 3,956.50

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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.