Home / 7,742.36-11,629.38-5,113.72

Finding the Fourth Proportional to 7,742.36, 11,629.38 and 5,113.72

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Solution

The fourth proportional to 7,742.36, 11,629.38 and 5,113.72 is: 7,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.36 : 11,629.38 = 5,113.72 : x
  2. Step 2: Convert to fraction form
    7,742.36/11,629.38 = 5,113.72/x
  3. Step 3: Cross multiply
    7,742.36x = 11,629.38 × 5,113.72
  4. Step 4: Simplify right side
    7,742.36x = 59,469,393.09
  5. Step 5: Solve for x
    x = 59,469,393.09/7,742.36
  6. Step 6: Final answer
    x = 7,681.04

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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.