Home / 7,151.45-9,868.09-3,964.72

Finding the Fourth Proportional to 7,151.45, 9,868.09 and 3,964.72

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Solution

The fourth proportional to 7,151.45, 9,868.09 and 3,964.72 is: 5,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.45 : 9,868.09 = 3,964.72 : x
  2. Step 2: Convert to fraction form
    7,151.45/9,868.09 = 3,964.72/x
  3. Step 3: Cross multiply
    7,151.45x = 9,868.09 × 3,964.72
  4. Step 4: Simplify right side
    7,151.45x = 39,124,163.48
  5. Step 5: Solve for x
    x = 39,124,163.48/7,151.45
  6. Step 6: Final answer
    x = 5,470.80

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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.