Home / 7,138.27-9,855.63-4,450.54

Finding the Fourth Proportional to 7,138.27, 9,855.63 and 4,450.54

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Solution

The fourth proportional to 7,138.27, 9,855.63 and 4,450.54 is: 6,144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.27 : 9,855.63 = 4,450.54 : x
  2. Step 2: Convert to fraction form
    7,138.27/9,855.63 = 4,450.54/x
  3. Step 3: Cross multiply
    7,138.27x = 9,855.63 × 4,450.54
  4. Step 4: Simplify right side
    7,138.27x = 43,862,875.54
  5. Step 5: Solve for x
    x = 43,862,875.54/7,138.27
  6. Step 6: Final answer
    x = 6,144.75

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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.