Home / 5,118.28-7,686.66-2,654.80

Finding the Fourth Proportional to 5,118.28, 7,686.66 and 2,654.80

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Solution

The fourth proportional to 5,118.28, 7,686.66 and 2,654.80 is: 3,986.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.28 : 7,686.66 = 2,654.80 : x
  2. Step 2: Convert to fraction form
    5,118.28/7,686.66 = 2,654.80/x
  3. Step 3: Cross multiply
    5,118.28x = 7,686.66 × 2,654.80
  4. Step 4: Simplify right side
    5,118.28x = 20,406,544.97
  5. Step 5: Solve for x
    x = 20,406,544.97/5,118.28
  6. Step 6: Final answer
    x = 3,986.99

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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.