Home / 5,198.79-7,168.87-3,428.13

Finding the Fourth Proportional to 5,198.79, 7,168.87 and 3,428.13

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Solution

The fourth proportional to 5,198.79, 7,168.87 and 3,428.13 is: 4,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.79 : 7,168.87 = 3,428.13 : x
  2. Step 2: Convert to fraction form
    5,198.79/7,168.87 = 3,428.13/x
  3. Step 3: Cross multiply
    5,198.79x = 7,168.87 × 3,428.13
  4. Step 4: Simplify right side
    5,198.79x = 24,575,818.31
  5. Step 5: Solve for x
    x = 24,575,818.31/5,198.79
  6. Step 6: Final answer
    x = 4,727.22

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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.