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Finding the Fourth Proportional to 5,777.07, 7,974.40 and 3,419.21

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Solution

The fourth proportional to 5,777.07, 7,974.40 and 3,419.21 is: 4,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,777.07 : 7,974.40 = 3,419.21 : x
  2. Step 2: Convert to fraction form
    5,777.07/7,974.40 = 3,419.21/x
  3. Step 3: Cross multiply
    5,777.07x = 7,974.40 × 3,419.21
  4. Step 4: Simplify right side
    5,777.07x = 27,266,108.35
  5. Step 5: Solve for x
    x = 27,266,108.35/5,777.07
  6. Step 6: Final answer
    x = 4,719.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.