Home / 7,149.38-10,717.38-2,986.79

Finding the Fourth Proportional to 7,149.38, 10,717.38 and 2,986.79

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Solution

The fourth proportional to 7,149.38, 10,717.38 and 2,986.79 is: 4,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.38 : 10,717.38 = 2,986.79 : x
  2. Step 2: Convert to fraction form
    7,149.38/10,717.38 = 2,986.79/x
  3. Step 3: Cross multiply
    7,149.38x = 10,717.38 × 2,986.79
  4. Step 4: Simplify right side
    7,149.38x = 32,010,509.82
  5. Step 5: Solve for x
    x = 32,010,509.82/7,149.38
  6. Step 6: Final answer
    x = 4,477.39

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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.