Home / 6,622.83-9,139.64-3,638.79

Finding the Fourth Proportional to 6,622.83, 9,139.64 and 3,638.79

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Solution

The fourth proportional to 6,622.83, 9,139.64 and 3,638.79 is: 5,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.83 : 9,139.64 = 3,638.79 : x
  2. Step 2: Convert to fraction form
    6,622.83/9,139.64 = 3,638.79/x
  3. Step 3: Cross multiply
    6,622.83x = 9,139.64 × 3,638.79
  4. Step 4: Simplify right side
    6,622.83x = 33,257,212.44
  5. Step 5: Solve for x
    x = 33,257,212.44/6,622.83
  6. Step 6: Final answer
    x = 5,021.60

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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.