Home / 9,151.81-13,727.85-2,912.79

Finding the Fourth Proportional to 9,151.81, 13,727.85 and 2,912.79

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Solution

The fourth proportional to 9,151.81, 13,727.85 and 2,912.79 is: 4,369.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.81 : 13,727.85 = 2,912.79 : x
  2. Step 2: Convert to fraction form
    9,151.81/13,727.85 = 2,912.79/x
  3. Step 3: Cross multiply
    9,151.81x = 13,727.85 × 2,912.79
  4. Step 4: Simplify right side
    9,151.81x = 39,986,344.20
  5. Step 5: Solve for x
    x = 39,986,344.20/9,151.81
  6. Step 6: Final answer
    x = 4,369.23

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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.