Home / 7,686.66-11,515.41-3,793.80

Finding the Fourth Proportional to 7,686.66, 11,515.41 and 3,793.80

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Solution

The fourth proportional to 7,686.66, 11,515.41 and 3,793.80 is: 5,683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.66 : 11,515.41 = 3,793.80 : x
  2. Step 2: Convert to fraction form
    7,686.66/11,515.41 = 3,793.80/x
  3. Step 3: Cross multiply
    7,686.66x = 11,515.41 × 3,793.80
  4. Step 4: Simplify right side
    7,686.66x = 43,687,162.46
  5. Step 5: Solve for x
    x = 43,687,162.46/7,686.66
  6. Step 6: Final answer
    x = 5,683.50

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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.