Home / 6,538.21-9,806.35-2,155.09

Finding the Fourth Proportional to 6,538.21, 9,806.35 and 2,155.09

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Solution

The fourth proportional to 6,538.21, 9,806.35 and 2,155.09 is: 3,232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,538.21 : 9,806.35 = 2,155.09 : x
  2. Step 2: Convert to fraction form
    6,538.21/9,806.35 = 2,155.09/x
  3. Step 3: Cross multiply
    6,538.21x = 9,806.35 × 2,155.09
  4. Step 4: Simplify right side
    6,538.21x = 21,133,566.82
  5. Step 5: Solve for x
    x = 21,133,566.82/6,538.21
  6. Step 6: Final answer
    x = 3,232.32

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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.