Home / 7,120.53-9,826.79-4,137.03

Finding the Fourth Proportional to 7,120.53, 9,826.79 and 4,137.03

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Solution

The fourth proportional to 7,120.53, 9,826.79 and 4,137.03 is: 5,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.53 : 9,826.79 = 4,137.03 : x
  2. Step 2: Convert to fraction form
    7,120.53/9,826.79 = 4,137.03/x
  3. Step 3: Cross multiply
    7,120.53x = 9,826.79 × 4,137.03
  4. Step 4: Simplify right side
    7,120.53x = 40,653,704.35
  5. Step 5: Solve for x
    x = 40,653,704.35/7,120.53
  6. Step 6: Final answer
    x = 5,709.36

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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.