Home / 5,139.42-7,704.75-2,177.74

Finding the Fourth Proportional to 5,139.42, 7,704.75 and 2,177.74

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Solution

The fourth proportional to 5,139.42, 7,704.75 and 2,177.74 is: 3,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.42 : 7,704.75 = 2,177.74 : x
  2. Step 2: Convert to fraction form
    5,139.42/7,704.75 = 2,177.74/x
  3. Step 3: Cross multiply
    5,139.42x = 7,704.75 × 2,177.74
  4. Step 4: Simplify right side
    5,139.42x = 16,778,942.27
  5. Step 5: Solve for x
    x = 16,778,942.27/5,139.42
  6. Step 6: Final answer
    x = 3,264.75

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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.