Home / 7,145.39-10,720.29-3,199.97

Finding the Fourth Proportional to 7,145.39, 10,720.29 and 3,199.97

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Solution

The fourth proportional to 7,145.39, 10,720.29 and 3,199.97 is: 4,800.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.39 : 10,720.29 = 3,199.97 : x
  2. Step 2: Convert to fraction form
    7,145.39/10,720.29 = 3,199.97/x
  3. Step 3: Cross multiply
    7,145.39x = 10,720.29 × 3,199.97
  4. Step 4: Simplify right side
    7,145.39x = 34,304,606.39
  5. Step 5: Solve for x
    x = 34,304,606.39/7,145.39
  6. Step 6: Final answer
    x = 4,800.94

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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.