Home / 7,812.08-11,718.20-2,617.80

Finding the Fourth Proportional to 7,812.08, 11,718.20 and 2,617.80

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Solution

The fourth proportional to 7,812.08, 11,718.20 and 2,617.80 is: 3,926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.08 : 11,718.20 = 2,617.80 : x
  2. Step 2: Convert to fraction form
    7,812.08/11,718.20 = 2,617.80/x
  3. Step 3: Cross multiply
    7,812.08x = 11,718.20 × 2,617.80
  4. Step 4: Simplify right side
    7,812.08x = 30,675,903.96
  5. Step 5: Solve for x
    x = 30,675,903.96/7,812.08
  6. Step 6: Final answer
    x = 3,926.73

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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.