Home / 6,628.40-9,147.07-3,644.21

Finding the Fourth Proportional to 6,628.40, 9,147.07 and 3,644.21

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Solution

The fourth proportional to 6,628.40, 9,147.07 and 3,644.21 is: 5,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.40 : 9,147.07 = 3,644.21 : x
  2. Step 2: Convert to fraction form
    6,628.40/9,147.07 = 3,644.21/x
  3. Step 3: Cross multiply
    6,628.40x = 9,147.07 × 3,644.21
  4. Step 4: Simplify right side
    6,628.40x = 33,333,780.01
  5. Step 5: Solve for x
    x = 33,333,780.01/6,628.40
  6. Step 6: Final answer
    x = 5,028.93

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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.