Home / 6,622.31-9,138.58-3,638.07

Finding the Fourth Proportional to 6,622.31, 9,138.58 and 3,638.07

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Solution

The fourth proportional to 6,622.31, 9,138.58 and 3,638.07 is: 5,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.31 : 9,138.58 = 3,638.07 : x
  2. Step 2: Convert to fraction form
    6,622.31/9,138.58 = 3,638.07/x
  3. Step 3: Cross multiply
    6,622.31x = 9,138.58 × 3,638.07
  4. Step 4: Simplify right side
    6,622.31x = 33,246,784.65
  5. Step 5: Solve for x
    x = 33,246,784.65/6,622.31
  6. Step 6: Final answer
    x = 5,020.42

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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.