Home / 5,121.11-7,683.89-3,271.74

Finding the Fourth Proportional to 5,121.11, 7,683.89 and 3,271.74

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Solution

The fourth proportional to 5,121.11, 7,683.89 and 3,271.74 is: 4,909.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.11 : 7,683.89 = 3,271.74 : x
  2. Step 2: Convert to fraction form
    5,121.11/7,683.89 = 3,271.74/x
  3. Step 3: Cross multiply
    5,121.11x = 7,683.89 × 3,271.74
  4. Step 4: Simplify right side
    5,121.11x = 25,139,673.91
  5. Step 5: Solve for x
    x = 25,139,673.91/5,121.11
  6. Step 6: Final answer
    x = 4,909.03

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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.